guys...u might wanna try this...it worked for me...

Close Port 445:

1. Start Registry Editor (Regedit.exe) by clicking Start menu, and then click the Run icon.
2. In the small box that Opens, type: regedit then click the OK button. The Registry Editor will now have opened.
3. Locate the following key in the registry:
HKEY_LOCAL_MACHINESystemCurrentControlSetServicesNetBTParameters
In the right-hand side of the window find an option called TransportBindName.
Double click that value, and then delete the default value, thus giving it a blank value.

Close Port 135:

1. Then you must now navigate to the following registry key:
HKEY_LOCAL_MACHINESoftwareMicrosoftOLE
2. You will see there is a String Value called: EnableDCOM
Set the value to: N (it should currently be Y)
3. Close the Registry Editor. Shutdown and Restart your computer.

source: http://www.sizlopedia.com/2007/01/28/fix-g...hostexe-errors/