Hey guys. I finally decided to get vista and wanted a 64-bit OS for the first time. I have Windows XP Pro 32-bit installed and I wish to install Windows Vista Ultimate 64-bit and now wish to install it. I booted from the DVD and I got a black screen for around 30 seconds but it just loads up XP I have no idea what I have done wrong but I bet I should have read up about it first!! So guys! what have I done wrong? What do I need to do in order to install Windows Vista???????