I think that would require having a copy of Windows I could install, though. I have a copy of XP, but I cannot boot to it (it is not a system disk), meaning it's about useless for anything besides a direct upgrade from another version of Windows.
If I could find a good easy (HTTP, not bizarre-futuristic-protocol!) 36-hour forecast data source, I could just add it to my script and be happy as that would lead to me learning more Perl.