List of virtual keys that you can poll taken from:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp

backup URL: http://www.howtodothings.com/showarticle.asp?article=308

VK_LBUTTON	01	Left mouse button
VK_RBUTTON	02	Right mouse button
VK_CANCEL	03	Control-break processing
VK_MBUTTON	04	Middle mouse button (three-button mouse)
VK_XBUTTON1	05	Windows 2000 or later: X1 mouse button
VK_XBUTTON2	06	Windows 2000 or later: X2 mouse button
_	07	Undefined
VK_BACK	08	BACKSPACE key
VK_TAB	09	TAB key
_	0A-0B	Reserved
VK_CLEAR	0C	CLEAR key
VK_RETURN	0D	ENTER key
_	0E-0F	Undefined
VK_SHIFT	10	SHIFT key
VK_CONTROL	11	CTRL key
VK_MENU	12	ALT key
VK_PAUSE	13	PAUSE key
VK_CAPITAL	14	CAPS LOCK key
VK_KANA	15	IME Kana mode
VK_HANGUEL	15	IME Hanguel mode (maintained for compatibility; use VK_HANGUL)
VK_HANGUL	15	IME Hangul mode
_	16	Undefined
VK_JUNJA	17	IME Junja mode
VK_FINAL	18	IME final mode
VK_HANJA	19	IME Hanja mode
VK_KANJI	19	IME Kanji mode
_	1A	Undefined
VK_ESCAPE	1B	ESC key
VK_CONVERT	1C	IME convert
VK_NONCONVERT	1D	IME nonconvert
VK_ACCEPT	1E	IME accept
VK_MODECHANGE	1F	IME mode change r
VK_SPACE	20	SPACEBAR
VK_PRIOR	21	PAGE UP key
VK_NEXT	22	PAGE DOWN key
VK_END	23	END key
VK_HOME	24	HOME key
VK_LEFT	25	LEFT ARROW key
VK_UP	26	UP ARROW key
VK_RIGHT	27	RIGHT ARROW key
VK_DOWN	28	DOWN ARROW key
VK_SELECT	29	SELECT key
VK_PRINT	2A	PRINT key
VK_EXECUTE	2B	EXECUTE key
VK_SNAPSHOT	2C	PRINT SCREEN key
VK_INSERT	2D	INS key
VK_DELETE	2E	DEL key
VK_HELP	2F	HELP key
	30	0 key
	31	1 key
	32	2 key
	33	3 key
	34	4 key
	35	5 key
	36	6 key
	37	7 key
	38	8 key
	39	9 key
_	3A-40	Undefined
	41	A key
	42	B key
	43	C key
	44	D key
	45	E key
	46	F key
	47	G key
	48	H key
	49	I key
	4A	J key
	4B	K key
	4C	L key
	4D	M key
	4E	N key
	4F	O key
	50	P key
	51	Q key
	52	R key
	53	S key
	54	T key
	55	U key
	56	V key
	57	W key
	58	X key
	59	Y key
	5A	Z key
VK_LWIN	5B	Left Windows key (Microsoft® Natural® keyboard)
VK_RWIN	5C	Right Windows key (Natural keyboard)
VK_APPS	5D	Applications key (Natural keyboard)
_	5E	Reserved
VK_SLEEP	5F	Computer Sleep key
VK_NUMPAD0	60	Numeric keypad 0 key
VK_NUMPAD1	61	Numeric keypad 1 key
VK_NUMPAD2	62	Numeric keypad 2 key
VK_NUMPAD3	63	Numeric keypad 3 key
VK_NUMPAD4	64	Numeric keypad 4 key
VK_NUMPAD5	65	Numeric keypad 5 key
VK_NUMPAD6	66	Numeric keypad 6 key
VK_NUMPAD7	67	Numeric keypad 7 key
VK_NUMPAD8	68	Numeric keypad 8 key
VK_NUMPAD9	69	Numeric keypad 9 key
VK_MULTIPLY	6A	Multiply key
VK_ADD	6B	Add key
VK_SEPARATOR	6C	Separator key
VK_SUBTRACT	6D	Subtract key
VK_DECIMAL	6E	Decimal key
VK_DIVIDE	6F	Divide key
VK_F1	70	F1 key
VK_F2	71	F2 key
VK_F3	72	F3 key
VK_F4	73	F4 key
VK_F5	74	F5 key
VK_F6	75	F6 key
VK_F7	76	F7 key
VK_F8	77	F8 key
VK_F9	78	F9 key
VK_F10	79	F10 key
VK_F11	7A	F11 key
VK_F12	7B	F12 key
VK_F13	7C	F13 key
VK_F14	7D	F14 key
VK_F15	7E	F15 key
VK_F16	7F	F16 key
VK_F17	80	F17 key
VK_F18	81	F18 key
VK_F19	82	F19 key
VK_F20	83	F20 key
VK_F21	84	F21 key
VK_F22	85	F22 key
VK_F23	86	F23 key
VK_F24	87	F24 key
_	88-8F	Unassigned
VK_NUMLOCK	90	NUM LOCK key
VK_SCROLL	91	SCROLL LOCK key
	92-96	OEM specific
_	97-9F	Unassigned
VK_LSHIFT	A0	Left SHIFT key
VK_RSHIFT	A1	Right SHIFT key
VK_LCONTROL	A2	Left CONTROL key
VK_RCONTROL	A3	Right CONTROL key
VK_LMENU	A4	Left MENU key
VK_RMENU	A5	Right MENU key
VK_BROWSER_BACK	A6	Windows 2000 or later: Browser Back key
VK_BROWSER_FORWARD	A7	Windows 2000 or later: Browser Forward key
VK_BROWSER_REFRESH	A8	Windows 2000 or later: Browser Refresh key
VK_BROWSER_STOP	A9	Windows 2000 or later: Browser Stop key
VK_BROWSER_SEARCH	AA	Windows 2000 or later: Browser Search key
VK_BROWSER_FAVORITES	AB	Windows 2000 or later: Browser Favorites key
VK_BROWSER_HOME	AC	Windows 2000 or later: Browser Start and Home key
VK_VOLUME_MUTE	AD	Windows 2000 or later: Volume Mute key
VK_VOLUME_DOWN	AE	Windows 2000 or later: Volume Down key
VK_VOLUME_UP	AF	Windows 2000 or later: Volume Up key
VK_MEDIA_NEXT_TRACK	B0	Windows 2000 or later: Next Track key
VK_MEDIA_PREV_TRACK	B1	Windows 2000 or later: Prev Track key
VK_MEDIA_STOP	B2	Windows 2000 or later: Stop Media key
VK_MEDIA_PLAY_PAUSE	B3	Windows 2000 or later: Play/Pause Media key
VK_LAUNCH_MAIL	B4	Windows 2000 or later: Start Mail key
VK_LAUNCH_MEDIA_SELECT	B5	Windows 2000 or later: Select Media key
VK_LAUNCH_APP1	B6	Windows 2000 or later: Start Application 1 key
VK_LAUNCH_APP2	B7	Windows 2000 or later: Start Application 2 key
_	B8-B9	Reserved
VK_OEM_1	BA	Windows 2000 or later: For the US standard keyboard, the ';:' key
VK_OEM_PLUS	BB	Windows 2000 or later: For any country/region, the '+' key
VK_OEM_COMMA	BC	Windows 2000 or later: For any country/region, the ',' key
VK_OEM_MINUS	BD	Windows 2000 or later: For any country/region, the '-' key
VK_OEM_PERIOD	BE	Windows 2000 or later: For any country/region, the '.' key
VK_OEM_2	BF	Windows 2000 or later: For the US standard keyboard, the '/?' key
VK_OEM_3	C0	Windows 2000 or later: For the US standard keyboard, the '`~' key
_	C1-D7	Reserved
_	D8-DA	Unassigned
VK_OEM_4	DB	Windows 2000 or later: For the US standard keyboard, the '[{' key
VK_OEM_5	DC	Windows 2000 or later: For the US standard keyboard, the '\|' key
VK_OEM_6	DD	Windows 2000 or later: For the US standard keyboard, the ']}' key
VK_OEM_7	DE	Windows 2000 or later: For the US standard keyboard, the 'single-quote/double-quote' key
VK_OEM_8	DF_E0	Reserved
-	E1	OEM specific
VK_OEM_102	E2	Windows 2000 or later: Either the angle bracket key or the backslash key on the RT 102-key keyboard
-	E3-E4	OEM specific
VK_PROCESSKEY	E5	Windows 95/98, Windows NT 4.0, Windows 2000 or later: IME PROCESS key
-	E6	OEM specific
VK_PACKET	E7	Windows 2000 or later: Used to pass Unicode characters as if they were keystrokes. The VK_PACKET key is the low word of a 32-bit Virtual Key value used for non-keyboard input methods.
_	E8	Unassigned
-	E9-F5	OEM specific
VK_ATTN	F6	Attn key
VK_CRSEL	F7	CrSel key
VK_EXSEL	F8	ExSel key
VK_EREOF	F9	Erase EOF key
VK_PLAY	FA	Play key
VK_ZOOM	FB	Zoom key
VK_NONAME	FC	Reserved for future use
VK_PA1	FD	PA1 key
VK_OEM_CLEAR	FE	Clear key