I have downloaded latest SDK 5.0.06 and tried to use crmsvcutil.exe but encountered problems:
Exiting program with exception: The logon attempt failed Enable tracing and view the trace files for more information.
I followed the same instructions below and it solved my problem:
http://community.adxstudio.com/Default.aspx?DN=9a7499fb-4e9a-408c-8096-6d658f9509a2
It seems CRMSVCUtil is the problem.