internet conection not proforming like it should

ok at friends house he/she on the 4th of april decided to put a www.point for their system restore and haven't had anything since. I am not a wiz or anything i just know how to wipe everything out and reinstal it. I am totally confused because I've done t
his 3 times on mine and everything worked. the only difference is I have a Broadband Modem and his says webstar. so please I'm leaving in morning and been here since Friday and been doing this. hence the name Going Out of My Mind. I will stay here until
someone helps because I dont have trhe strength to move. Plus this is my e-mail addy not theres theres is