Have only tried this on XP Pro but it works great. Decreased my login time from 2mins to 15secs. Increased my network speed (ex. 170MB file took 15-20min. Now the same 170MB file takes less than 2mins). WOW!
Here it is... Go into your network properties and then into your TCP/IP settings. Add your Server's IP address as Prefered DNS Server. Then select you Advanced button, go into your WINS tab and insert your Server's IP address for your WINS address as well. Reboot the system and you SHOULD see a difference. I have already tried this on several systems and have seen the same increase in speed.