Have a late 09 i7 27" iMac with XP SP3 installed on Bootcamp partition. Even after turning down brightness in Bootcamp control panel all the way down, I still feel like I'm staring at the sun... screen is still way too bright. No such issue in OSX. Is there any Windows app (similar to Shades) that allows further brightness reduction? With brightness as is, Bootcamp is pretty much unusable to me.