My 4 year old desktop Gateway's motherboard went south. Ive ordered a HP Pavilion P6313W. I figured since I was going to have to reinstall all my programs on the new machine, it would be a good time to update from 2009.5 to 2010.5. Will I have to reinstall my 09.5 to get the 10.5 upgrade to load?

Also, Everything was going along fine with XP. Should I expect any problems with Windows 7 ?

thanks
Martin