virtualbox.org

I run Ubuntu (Natty) as my primary OS. I need Vista to sync my music player and that's about it. What are the minimum requirements I can allocate to it as a VM? If its a tad bit slow, it won't be the end of the world - I just don't want it hogging up all of my resources.

When you create the guest and select the operating system you are given the default (minimal) settings. I would not run it with less than 1024MB of RAM, Video memory does not matter that much and is set to the default when creating the guest.