New Laptop

I am looking to buy a new laptop for Running solidworks 2008.I am looking for the best performance from a laptop, so that I canavoid having to get a desktop, I travel quite a lot. I amconsidering the Hp 8710w or the Dell Precision 6300. I have an HPand am pretty happy with it, but the Dell seems quite a lot cheaperfor the same specs. Also wondering about the Nvidia Quadro FX 3600Vs the 1600. I am looking at purchasing a system with a Intel Core2 Duo 2.6 GHZ with 4GB of Ram. I am planning to run Win XP as Ihave not heard anything positive about Vista. Will XP handle the4GB ram?

Thanks in advance for any help you guys can give.SolidworksAdministration