Open your registry and find the key below. Where #### is the binding for TCP/IP. More than one TCP/IP binding may exist. 

For each number (eg. 0001) open the key and create a new DWORD value called 'PerformRouterDiscovery' and set the value to equal '0'. 

Exit Windows and Restart. 

Key:[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Class\NetTrans\####]
Value Name: PerformRouterDiscovery
Data Type: REG_DWORD
Data:(0 = disable, 1 = enable)
For More Info Visit: http://support.microsoft.com/support/kb/articles/q216/1/41.asp