I had to re-install XP on my dual-boot system after a problem coupled with an error on my part at rectifying the problem. In so doing I decided to replace my XP Home install with XP Pro. Trouble is my splash screen now shows just "XP" - no "Home" or "Professional".
smokingbeagle is perfectly correct but, if you want to be absolutely certain to ease your mind, right click on My Computer, select Properties and the General tab will/should list XP Pro plus the version and Service Pack 2 as being installed.
This thread is now locked and can not be replied to.