Only retail Vista Ultimate ships with both 32 and 64-bit dvd's. If your
system was pre-installed it most likely is OEM and you would have to purchas
e anew system. Then format and reinstall.

--
Peter
Toronto, Canada
"jagojv" <jagojv@discussions.microsoft.com> wrote in message
news:FCBBFCAE-D8EE-4BE7-9516-13EFC27777ED@microsoft.com...
>I purchased my computer with a Vista Ultimate operating system, but made
>the
> mistake of getting the 64bit version. The reason it was a mistake was the
> compatability issues I've been having. First my video camera's software
> is
> not compatible and then I purchased a MIDI controller that it turns out is
> not compatible with the 64bit system.
> My question is, can I some how switch my system to a 32bit setting or do I
> have to buy a new 32bit operating system?