Huh...this is a dell forum, what do you think people are going to say?
I'd wait for a dual-core laptop to be honest. The fx-57 will churn out a bunch of heat, and IMO the XPS gen 2, even with a 7800gtx "go" will be obselete the moment a 64-bit, dual core pentium m is available. They're slated for early Q1/2006 (read: January, feel free to google em).
Like they said, the games aren't CPU limited right now anyway, so notebooks are at a distinct advantage in that the switch to dual core will have likely negligable impact on performance in single-threaded games, but will have the added bonus of multitasking, 64-bit computing, and compatibility with Vista and other programs due to be released soon-ish. In short, since intel has shown no sign of using the same mobos like amd did, the current pentium-m is likely at the end of it's update path and will become obselete in the next 4-5 months.
PS- Note that I define obselete as "not being worth the money for the value" in this sense. There are some people who will say "I am still able to play games on it, how is that obselete? Only when my laptop can do NOTHING will it be obselete." That is not what I am saying. I'm saying, for new purchasers, the cost/value ratio of the goods on the market will make the current pentium ms highly undesirable in a short matter of time.
PPS- For background, I just bought a 9300, knowing full well I intend to sell it around christmas. It's just a "bridge" for me until I can build my desktop.