MyTemp

hi guys I have 2 computers (one is using windows 7, other is using windows xp), one switch and router. I don't have physical access to router. I have plugged the cable from router to switch, and connected both PC's to switch and now I have internet on both PC's. My question is, can I "control" or share files on windows xp with Windows 7 (main computer) and in same time have access to internet? Or to use windows 7 to connect to internet?