recently in a torrent comments section i came across they were these users talking about this tcpip.sys patch from lvllord.com. so i googled it and it talks about how on WXP that theres a maximum of 10 half open ports and by using this patch you can increase half open ports to 100(etc) and how it will allow you to dl faster.
but after researching a bit further myself and trial testing i found it to be a useless patch and would advise against it, in my own opinion. it has the option to uninstall and revert back to default settings. it allows your computer to run at a higher risk health wise. besides to maximize dl speeds you need to adjust your firewall and forward ports. theres many schools of thought on max dl speed out there. i just wanted to post what i came across with the lvllord.