You could spend about $60 on a WRT54GL and do a firmware patch with either Tomato, DD-WRT, or OpenWRT.http://www.polarcloud.com/tomatohttp://www.dd-wrt.com/site/index
- I hear QOS doesnt work well, might want to skip over this one.http://openwrt.org/
- Lots of great QOS scripts
So research which firmware is for you, and research QOS scripts. Which will allow you to control bandwidth.