Microsoft have released a nifty little ActiveX control, which enables users to adjust the level of Cleartype, on a scale from 1 to 6. It takes a bit of experementing, and a few hours of use to get used to it, but once you've used it, you won't believe how much of a difference it makes. Anyhow, stop torturing your eyes, and download it here.
Info: WinXP only. Thanx goes out to All_Aluminium_is_better for this information.