Internet connection sharing

Hello everybody.
I have a dual boot box running win2k and slackware using a wireless pci.
This box is connected to another wich is using win2k and dlink 10/100 nic through a 5port switch (they are not networked yet).
I need to be able to share my internet connection using slackware wireless with my second box using win2k.
Is there any easy way I can make this work?
Any help is appreciated.
Thank you.

The quick and easy way would be to install firestarter and check the Internet Connection Sharing box in the Interface..

http://www.fs-security.com/docs/connection-sharing.php

of course there are other methods