Subpixel Rendering and ClearType

Subpixel rendering is a technology which makes the texts on your computer display screen appear more clear. The first thing I loved about IE7 when it first came out was the difference between the appearance of texts on IE7 and Firefox and I wished I could have the same text quality on Firefox until I found the solution when my IE7 started crashing again and again a couple of days ago and I had to make a complete move to Firefox!
ClearType is the Microsoft implementation of subpixel rendering technology and it is "turned off" in Windows XP, by default. it can be turned on though. On Vista Computers it is turned on by default.
ClearType can be "turned on" at OS or Application Level. In the case of IE7 and Microsoft Office 2007 it is turned on at the application level but to enjoy reading texts in other applications like firefox in windows XP it must be turned on at the OS level by downloading The "ClearType Tuner" from the following Link:
http://www.microsoft.com/typography/ClearTypePowerToy.mspx
Click on the following image to see the difference:
More information on ClearType:
ClearType - Wikipedia, the free encyclopedia