Boosting Internet speed?

Does anyone know tweaks, or accelarators to boost internet speeds without installing spyware, or leaving a massive loophole into ones system? I have a cable connection and dont connect as fast as they claim I should, I connect at about half of what they say I should...

http://www.winguides.com/registry/

>>2
that's spam shit.
http://www.speedguide.net/

get TCPOptimizer. That's all you can do short of hacking your modem.