Check the Workgroup in Windows Vista

• 1). Click "Start," then "Control Panel." Click "Classic View" in the left column if applicable.
  
  
• 2). Double-click "System."
  
  
• 3). Write down the name of your "Workgroup" under the "Computer name, domain and workgroup settings" header. Make sure you write down the name exactly as Windows shows it.
  
  

Set Workgroup Name in Windows XP

• 1). Click "Start," then "Control Panel." Click "Classic View" in the left column if applicable.
  
  
• 2). Double-click "System."
  
  
• 3). Click the "Computer Name" tab. Click on the "Change" button if the "Workgroup" name does not match the exact name of the Windows Vista workgroup.
  
  
• 4). Type the "Workgroup" name so that it exactly matches the Windows Vista workgroup name.
  
  
• 5). Click "OK" three times to allow Windows XP to restart the computer.
  
  

Install the Link Layer Topology Discovery (LLTD) Responder to Windows XP

• 1). Click "Start," then "Control Panel." Click "Classic View" in the left column if applicable.
  
  
• 2). Double-click "System."
  
  
• 3). Determine which Service Pack you have installed on your Windows XP computers by reading the information under the "System" header on the "General" tab.
  
  
• 4). Download and install Windows XP Service Pack 3 if you have any earlier service pack installed. See Resources.
  
  
• 5). Download and install the Link Layer Topology Discovery (LLTD) Responder (see Resources).
  
  
• 6). Restart your computers.