I pushed my XP machine from Cap1 to Cap2 and then to Cap 3
with no glitches at all. The only thing that worries me is to use
an upgrade package from 1 to 3 as I do not think this will work. I
could be wrong, but I think Adobe will only let you upgrade
sequentially, so unless your Cap 3 is a full package you might have
Regarding hardware, my device is a Core2 duo processor with
1Gb Ram, so if you are running similar spec or better you should
not have any hardware problems.