Return opened software? I wonder which vendors permit that.
Alternately, visit the Sony web site:
http://www.ita.sel.sony.com/support/
Go to the support page for your model, and select "other OS". You'll find
SOG2303DAK.EXE, which installs XP compatible fan controller software. I'd
give you a link, but Sony's use of Java makes it awkward to locate the
actual URL for the file.
I don't own such a machine, so I can't say that I've tried the fan
controller.
While you're there, check for other XP compatible drivers fro you system.
Microsoft does not include, on the XP CD, every driver for every PC and
peripheral ever built.
Good luck.
Address altered to avoid spam. Replace nkbob with bobkn.