Re: Triple boot Windows: XP, Vista, and 7?
Jesus, way to derail the OP guys.
To the OP: just create a new partition of 50Gb or so then do a fresh (full) installation of W7 and it will recognize your other OS in the bootloader and give you the option of what to boot into as usual.
No further muss is required, I have quad-boot and have never had to download third party garbage, etc. to get a multi-boot working.
I think one caveat is that you must install the "oldest" OS first, else the boot loader will not recognize the newer OSs - so as long as you are installing W7 last, you should have no problem.
Windows 7 Home Premium 64 | 6Gb OCZ 1600 Mhz | i7 950 OC to 4.0 Ghz | 280 GTX SLI | ASUS P6X58D-E | Dell 3007WFP | Corsair CMPSU-750TX 750W PSU
"Some say Chuck Norris can divide by zero; while this is true, he would have no need. For Chuck, the zero would divide itself."