Is there an easy way to upgrade the graphics card on it, since it is a laptop? I know nothing about replacing GPU's.

It's possible, but you're going to have a hell of a time finding a laptop GPU that doesn't cost you an arm and a leg (and prepare for battery life to decrease). Basically the only thing that can't be replaced on a laptop is the screen.

I did see a Nvidia Geforce 9800 for between $150 and $200. It wasn't a Go, but if that's the price range, then it's not too expensive.

If that's your budget and you're up for this:

http://www.pcworld.com/article/148909/upgrading_your_laptops_graphics_card.html

You should be set. The process is a bit scary so make sure you're capable.

With an old CPU like that though, is it really worth sinking more money into upgrades?

I mean, a more current GPU would do something, but the rest of the hardware might not use it to its potential.

Most games( if not all) are optimised for dual core. so the CPU is a bit weak. GPU is fine for playing games like Quake 4 but no chance of getting any newer titles to run above low-medium settings at 720p..

overall I'd pass on this system.. unless you were getting it for say $100

What the hell are you talking about? His PC is more than enough to run Crysis, possibly even on medium settings. I have tried Crysis on a much worse PC than his.

His PC is more than enough to play most PC games on medium or high settings. The only games that he won't be able to play is about only 1-2%, but he's gonna have to keep low settings on more graphic intense games.

A 9600GT can barely play Crysis on medium at 1024x768...and that card is much more powerful than his.

http://www.tomshardware.com/reviews/cpu-gpu-upgrade,1928-8.html

20 fps at 1280x1024. FPS games aren't playable at under 30fps, sorry.

He will be able to play Crysis. His specs are above the minimum requirements.

He will still have to have the visual quality set on low, with some on medium MAYBE. This defeats the whole purpose of the game because Crysis is an average FPS coated in beauty.