[Ham-Computers] XP install question

[WØQFC]

I have a friend that has a illegal copy of XP PRO on his computer (Don't ask 
how/why!).

I have located a XP Home disk and wonder if the Home edition can be 
installed on the computer that already has the XP PRO edition without 
loosing all the programs and settings? Or, is the PRO edition considered 
newer than the Home edition and won't let the Home edition install?

TIA

73

Gene, WØQFC

www.w0qfc.com