i have therer computere in work group one is my windows 7 ultimate and one is windows server 2003 and one is windows xp.i have share some drives on all computer but when i click on newtork.the two pc apper but when i click it require user name and paswaord i have turn off all pasward on wondows 7 and othere windos but stiill con't acces computer in work group.i think it is not possible in wondows 7.i also turn on all option in advance sharing in controal pannel ok

Hi, When you are prompted to input the username and password, please try the administrator account of the Windows 7 computer. Meanwhile, please also try: 1. If you have installed some security software(firewall, anti-virus, anti-spyware, etc.) in Windows 7, please temporarily disable or remove it to see if it works. 2. Adjust sharing settings: 1) Go to “Control Panel\All Control Panel Items\Network and Sharing Center\Advanced sharing settings”.2) Under “File sharing connections”, select “Enable File Sharing for Devices that Use 40 or 56-bit encryption”.3) Under “Password protected sharing”, select “Turn off password protected sharing”.4) Save the changes above. Hope this helps. Thanks.Nicholas Li - MSFT