Fixed
Okay, i have a nforce motherboard aswell, Ethernet didnt worked... i went nuts last night tryign to fix this issue trying everything i found over forums, downloaded drivers from my motehrboard site, didnt work, tryed nforce drivers from nvidia, same result (Tryed to install almsot every version of windows drivers i found).. then i remembered this program called "EVEREST" , i downloaded it, saw who was the manufacturer of my ethernet device, went over their site, got the driver for vista32 bits, run the setup over vista compatibility and DONE. Ethernet workign right away.
Hopes this helps anyone.
Cheers!