Internet connections?

so i have a gaming pc in my room connected through wireless and i wanted to connect it to another pc i had to host simple game servers, i had the other pc running unbuntu(drvie partition) and it was working fine through ethernet cable(idk what kind...)but then i reinstalled windows 7 home premium and now the ethernet cable wont work it says about drivers for the port, so i used a memory stick to download and install the drivers but it had they wouldent work for this version on windows even though it was right? im so confused on what to do? how can i give it connection.