Separate names with a comma.
Try to reinstall Parallels Desktop.
Maybe reinstalling Parallels Tools helps you.
Try to reboot Win Xp.
Do you have in configuration Cd-Rom device? Or autorun Cd is off? You may try to manually install parallels Tools from .iso file...
You must to uncheck Parallels Desktop->Perferences->User Interface->Advanced->"Exit fullscreen on focus lost"
You must to try this, because with acronis true image it works.