RUNAS USAGE:

RUNAS [/profile] [/env] [/netonly] /user: program

   /profile        if the user's profile needs to be loaded
   /env            to use current environment instead of user's.
   /netonly        use if the credentials specified are for remote access only.
   /user            should be in form USER@DOMAIN or DOMAIN\USER
   program         command line for EXE.  See below for examples

Examples:
> runas /profile /user:mymachine\administrator cmd
> runas /profile /env /user:mydomain\admin "mmc %windir%\system32\dsa.msc"
> runas /env /user:user@domain.microsoft.com "notepad \"my file.txt\""

NOTE:  Enter user's password only when prompted.
NOTE:  USER@DOMAIN is not compatible with /netonly.