u better use 2 OS, 1 for download and 1 for use, the OS for download better is win98 = no personal firewall - no sercurity and only install bittorent client for download, don't install any security or antivirus-spy-ad or freeze system programs and then go to a second hand shop and buy a oldest version modem u see and use it. High sercurity = low speed.
Use partition magic to hide ur main OS disk for anti-hacker and remember to ghost ur disk...
I got 256k internet and my bittorent speed around 5-250, 5k/s for less seeds and peers, and 250/s for much seeds and peers, i got high speed download at night and low speed at day.
Hint: Cut the electric if u meet the hacker or virus... hahaha, and then run a other OS and retore win98 oh..err.errm
Mingled among the sheep there is a wolf--
And by his own lonely fangs he is rent.