According to a notice posted on Apple's Web site, compatibility problems include the inability to play music or video purchased from the online iTunes store, difficulties synchronizing contacts and calendars and possible failures of iPods plugged into a Vista computer. Apple also outlined precautionary steps users could take to try to minimize any problems should they upgrade to Vista now.
http://news.yahoo.com/s/ap/20070203/...MwBHNlYwM3Mzg-