Windows 7 – Run program as admin without entering credentials? (Automatic Win7 elevation)

I’m working on my systems without admin rights, but I’d like to start sysinternals process explorer as full admin to have some debug access on my machine.

Right now I run procexp.exe with parameter /e, which prompts me for admin credentials.

Of course I could use runas, but for this I would need to put my admin passwort in clear text in the corresponding batch file, which is something I don’t like to do.

Is there a way to tell windows that this one procexp.exe is allowed to run as admin without needing to enter the credentials?
In Unix systems this is done using setuid (or setgid), but how can I achieve this functionality in windows?

Solution:

There is Encrypted RunAs from www.wingnutsoftware.com, which is not free but cheap. There is an alternative (free?) project called CPAU, but it seems basically abandoned.