Thanks, Mac. Maybe I should have made it clearer that I want to MOVE from desktop to laptop so the program would only be on one machine!

I was a bit worried that if I uninstalled BB2008 the 2010 would not install as it is an upgrade and would therefore expect to find BB already installed. I have had this problem several times with Adobe Premiere. I would then be stuck as I have no 2008 installation disk (I can't remember whether you sent them out or not) and have lost the original download.