Honestly i have a lot of software to reinstall not to mention all the drivers, but im going to upgrade my desktop from vista to windows 7. Win 7 Runs flawlessly, vista is garbage. The only reason to use vista was because it could handle up to 16 GIGs of RAM and had a 64 bit operating system, opposed to XP it could only do 8 Gig RAM (i think) and only offered 32 bit operating system. Now win 7 is out it can handle what ever vista has.