Dual booting vista and windows 7? -

my friend tried dual booting windows vista and windows XP and ran into problems even though they where on deferent partitions(vista deleting the boot files of XP)...and i was wondering if i might run into the same problem if i dual boot windows 7 on my vista pc

I did it and it works fine for me.

As long as you setup windows setting up bios to boot up from cd and choose setup windows in second partitioned drive you should be ok.