Bluetooth adapter with proper XP drivers should be enough to get bluetooth working. Took me awhile to figure out how to sync phone with Outlook...I kept looking for special software installed on my computer but none is needed...just go to 'My bluetooth places' and double click the sync icon when your phone is on and bluetooth is active. First time you'll have to 'pair' devices and after that it's cake.
However, I *STILL* haven't figured out how to make my bluetooth phone sync directly with my bluetooth PDA (I don't think it can?)