Unable to determine if you have administrative privileges on the server

This is the error i'm getting whenever i try to add a server in the Failover cluster management running on a windows7 client joined to a domain. And theservers run Hyper-V Server 2008 r2.Tried to run thehvremote.wsf in both the servers but getting anerrorget Trustee failed when tried to run the scripts.Can any one help ....

Thanks in Advance.

K.Sampath Kumar