Cannot change Workgroup in XP Professional

I have a XP Professional workstation that will not join our workgroup.  Workgroup name XTREEM ... if i run the wizard and reset the workstation to MSHOME or WORKGROUP everything seems normal.  I can go to "View Workgroup Computers" and my machine shows up including some rogue machines that are not part of the workgroup.  When I try to change to our workgroup, I can not even see my machine ... All I get is "Workgroup Name is not accessible. You may not have permission to use this network resource. "

I have tried everything that I can think of and nothing.  I know I have run into this before and have corrected it, but I don't remember how.

Thanks in Advance
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try this

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then double-click the following registry subkey:
3. In the right pane, double-click restrictanonymous.
4. Make sure that the value in the Value data box is set to 0, and then click OK.
5. Close Registry Editor.
6. Restart the computer.

also check the event viewer and see what Event ID it gives you.
vic45708Author Commented:
This time the WinsockXPFix fixed it ... beleive it or not ... it was the one thing that I did not try.

Thanks for the help.
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Windows XP

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