Well first thing is you want a wired connection between the 2. Other wise it will take forever. So you want both computers wired to any port other then the WAN port (most likely the one different from the others) . To set the work group (in Win XP) Control Panel ->Sytem ->Computer name ->Click the change button, then change the workgroup name. For vista its probably something similar. after they have the same workgroup see post above.
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