Need Laptop Advice

Okay, so I've just come to the realization that I spend as much on "upgrading"(read: keeping it operational) my computer than most people waste on a cocaine addiction. Right now, my PC is bigger than a PS3(and that is hueg, amirite?), is louder than when I worked at the loading docks at UPS, has an aging 17" CRT, and will require a major overhaul(~$1500) just to remain slightly behind the tech curve. My thoughts are that I just say "screw it" and dump a couple grand into a more man-portable and up-to-date notebook that will do what my current rig does and then some, PLUS won't give me a hernia when I need to move/go to college/etc.

Thoughts/advice?

Oh, and so you know I'm currently using:

MSI K8N Neo2 Platinum Mobo
1G Geil memory in dual-channel mode
560G SATA RAID 0
Nvidia 7800 GS(AGP)