I prefer VirtualBox, give it a try. But my guess is that a laptop running Vista will have a lot of troubles running virtual machines. (Thanks to Vista's small demands in resources).
I Agree with that. u'll need
at least 2.5 GB Ram to work smoothly with virtual machines on vista.
But Still. if you don't have any other choice. u'll have to go for it.
at least i had to ! :(