Hi, I thought I would be fine on this, but after having read through a few posts I'm more confused than ever. At present I have two hard disks on my machine, I have XP Pro on my first disk, c: and the second drive has a 20GB backup partition on it f:(Data from c:) I also have set up my virtual memory on a 3GB partition (p:)on the second hard drive as well. Both drives are 80 GB sata. (side note - I noticed a very significant speed boost after doing this with the virtual memory) So, what's my best plan of attack here, I want to install Vista 64 on my computer and dual boot with XP Pro. Do I just pop the dvd in the drive and clcik through the installation? I do expect to maintain XP Pro as my main OS, Vista will most likely be wiped out after a period of time. I just thought I had better plan this out to make sure I can access my XP Pro without any problems. Cheers from Peter.