Problems with dual boot vista/xp

[Serben]

I had only vista installed up until yesterday, but then i decided to install XP as well and use it as a dual boot since there are certain apps/games that don't work in vista. So now i've got XP installed, but the boot menu where you select the OS you want to boot doesn't work. I can only boot xp, not vista. I tried changing the boot.ini in XP and add vista as an option, and when i select vista in the boot menu it says that some file is missing or something. I haven't changed anything in the vista folder. It is still exactly as it was yesterday, but it just won't boot. I'd rather not have to re-install it from scratch and lose all my settings and installed stuff, i just want to be able to boot it. My understanding is that vista doesn't use the boot.ini file, but some other file, so that might be the problem. How can i force the computer to read vista's boot file instead of XP's?

[jazz836062]

if you have your vista DVD load it and restart. Do a startup repair and it should work after it runs.