Hi dlg,
I can understand your frustration with imac's, particularly if you are more PC experienced. However, the good news is that you can buy software called Virtual PC for mac. There is an XP version for the mac however, you will need to check compatibility with your mac operating system. What mac operating system do u have. Virtual PC can be quite expensive, but if u know a local software dealer, u may get it cheaper.
Just for assurance, copy this link into your browser and it will show u what I mean.
http://www.microsoft.com/mac/product...x?pid=howtobuy
Also, if your uncle wants to reinstall everything from scratch, he can insert his mac operating system disk into the CD-Rom drive and resart the system and press the letter C and it will boot from the CD and allow you to reinstall Operating system. By clicking software install or something, look for a fancy icon and when u clik that, it will give you an option of deleting existing files/folders etc.