Slow reponse on network but only one PC

More info --- problem narrow down a little.... Its actually no response some times.... what is happening is when a page is loading from the internet site and before it is fully loaded you select something on the page to go to that is when the hang occurs.... If i wait until the entire page is loaded then everything is ok.. The problem occurs now because Im on a 802.11b connection wireless cpu and response it a lot slower then being connected direct to the modem and router.... Any ideas? Im sure i can hit something before the entire page is on the screen... Cant I?

Thats a 40 ft cable runniing thru the house.. I dont have a craw space or a basement. The problem now seems to me to be a system software problem. If i hit the enter key before my entire screen is available i hang up..... Anybody heard of this kinda problem.... I guess now i should report this in a different area... Im not positive now its a networking problem but that does bring it on since my transmission is a lot slower now......