BV

I have a laptop (win2k) with hi speed wireless. (free from the neihbor) hahahahaha

I want to plug the laptop into my home network for file sharing and keep using the wireless for an internet connection in order to get a second machine/ internet connection uploading content.

My problem is that when I plug the laptop into my network the internet connection switches from the wireless connection to mine.

How do I force it to keep using the wireless connection but still allow me to access another computer on my network?

Thanks in advance,
BV