A client of mine had this issue recently. When you try to start a program with administrative privileges in Windows XP by using the Runas command, the program window opens but it’s empty. This happens because of an issue with permissions. There is a fairly simple workaround for the problem.

To work around this problem, keep the first Command Prompt window open. To do so:

1. Click Start, and then click Run.
2. In the Open box, type cmd, and then click OK.
3. At the command prompt, type the following command, and then press ENTER.

   runas.exe /user:administrator "cmd /k runas /user:user_domain\user_name /netonly cmd"

After running that command, start the program that you wanted to run from the command prompt and it should run without issue.

See KB article 322906 for more information.