invest in a wired/wireless router and share away. Linksys among others has the info:
http://www.linksys.com/servlet/Satellite?childpagename=US%2FLayout&packedargs=c%3DL_Content_C1%26cid%3D1115417027773&pagename=Linksys%2FCommon%2FVisitorWrapper
Check out the Learning Center.
I have a Linux computer and a Windows XP computer that I want to share a DSL modem. I know that both of the computers are configured for ethernet connection. Could ya'll please explain what I need to connect both of them to the DSL modem and how to put the stuff together?

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