Currently I have a dual boot of windows xp and vista x64 on a 320gb drive. I also have a 1TB secondary drive for backing up things, so if possible I would prefer to install windows 7 on my larger secondary as my primary one is pretty filled up. I downloaded windows 7 beta and I want to give it a try but I don't want to get rid of either xp or vista. How would I go about installing windows 7 in a triple boot. Also would I be able to get all three to show up in the same boot menu? Thanks in advance for your help.