I'm thinking about buying a new laptop.

Looking at the dell site and the hard drive selection only goes up to 100G.That seems very small.

Also the Gateway MT6839B only seems to ship with vista home premium.
I want to use business or ultimate
has anyone upgraded home premium to to ultimate and if so where there any problems.
Come to that do I need ultimate or should I just buy a copy of vista business and replace whats on the laptop.

Thanks.