I don't know much about the linux side of all this, but whenever I try to access the workgroup it says you do not have premission to access.... blah blah blah. The server is running slackware, and I did get my own IP shit set up before. Other computer can access the workgroup that are running XP, so I don't know. I know this is a Linux place, but it seems like it could be because of the server, let me know thanks.

First of all having windows computers in a workgroup gives them no rights.

-A workgroup is just a selection of computers made by you or someone else which are able to see each other in windows nifty network neighbourcrap.

-A domain is a group of computers selected by the administrator and has global rights / groups etc.

anyway, knowing that.. you should be able to type the following command on your linux box to view the contents of one of the windows XP machines:

smbclient -L //computername/

(smb is samba, which is the netbios share implementation for Linux if you want to know more about this have a look on www.samba.org)