Router and Slow Internet Related?

Alright here's the deal: I have comcast broadband connection hooked to a (new - just replaced) motorola surfboard. The surfboard is hooked to a 5 year old netgear 802.11b wireless router. 4 computers are connected to it. One comp is linked directly via ethernet cable and the other 3 (most importantly mine) are connected through the wireless access point. I'm connecting from the furthest point in the house but my signal strength is still full.

The problem:

Basically my speed blows. I can't even play starcraft without lagging. My bittorrent speed maxes out at 30kb/s. Most importantly when I attempt to download something or play a game I hog every last bit of the bandwith. The other poor people on my network can barely surf the web at that point.

The point:

Would buying a new router aleviate the problem? 802.11 G is much better from what I hear but its not additonal range that I really require. 802.11b's max transfer rate is 11mb/s and I'm not even getting close to that so would a more powerful router really increase my connection speed and distribute bandwith more evenly? If not what else would fix the problem short of getting a separate broadband line.

sorry for the long post but this issue is pissing me off. Thanks in advance for any help you guys/gals can give.

I wouldn't bother buying a new router. I believe you just have some settings wrong in your router. Like for my linksys 11b router, the default wireless speed was not at the full 11mbps, so I had to turn that up. As for your bittorrent speeds, you'll probably just to need to foward the correct port of you BT client. Just log into your router and check everything out.