tbh bud... naff all .. you need a new router.
i have been in the same situation as you with netgear routers... and funnily enough.. one of which was supplied by Virgin Media when i was on a 10 meg con..
now im on 20 and dont get above 10 (pretty similar to your own)
if you are going for a router... i would recommend the Linksys WRT54G
its cheap... it works and iv had it for 4 years... and i liked it so much so...
i just moved address... left my parents mine and bought myself another one for this house..
full 20mb in 2 addresses
woohoo...