Running Windows 7 instead of Vista will make a massive difference since the system will be stable for start off! W7 is what Vista should have been.
@ OP - I strongly advise against Vista, spend the money and get Windows 7 it is far superior in every way.
Stoner81.
op has a slow system not an unstable one...
i though general consensus was vista + sp2 + updates = almost w7 anyway?