Internet Connection?

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I use Norton Anti-virus thing for my internet (i have dial up) and it takes a LONG time to connect and when it finally does it's extremely slow. then i'd be on the internet and it would disconnect me for no reason so i'd have to connect ALL over again! the computer is pretty new too, flat screen and a windows XP but it's so slow. is there anyway i can change my internet connection from Norton to something else with out going thru the company or something? like gwi or fbx or something? cuz this is getting pretty annoying any answer would be appreciated thank you!
that was my bad guys. i use earthlink.net thing. i just think that norton is a source of the F****** problem anyway. thanks for answering more help would be appreciated!!!!