Here are two quick reg hacks for customizing the appearance of ClearType screen font smoothing:

	HKEY_CURRENT_USER\Control Panel\Desktop
	FontSmoothingOrientation = 1, 2 or 3
	FontSmoothingGamma = Between 1000 to 2000

FontSmoothingGamma

This setting basically adjusts the brightness.  The higher you go the brighter.

FontSmoothingOrientation

This setting determines the way your monitor pixels are constructed.

None = 0 (e.g. CRT Monitor)

RBG = 1 (Default and used by most LCD monitors)

BGR = 2