I got an error when debugging using Visual Studio 2005 like "unable to attach the binding handle is invalid".
I had a search in google and find that this is because the Terminal service is Stopped (actually it is disabled). So i just enabled it it and set it to Automatic. It solved the issue.
Control Panel => Administrative Tools=> Service
Select Terminal Services
Right Click=> Propertise
Choose Startup Type as Automatic, Click Apply
RightClick and Start
This may solve your issue