I'm looking and looking for this but i still can't find it anywhere

A CMD-prog that runs an other prog under a specific account

Hope someone can help me, many thanks already!

runas (built into windows2k+XP+2k3)

RUNAS USAGE:

RUNAS [ [/noprofile | /profile] [/env] [/netonly] ]
/user:<UserName> program

RUNAS [ [/noprofile | /profile] [/env] [/netonly] ]
/smartcard [/user:<UserName>] program

/noprofile specifies that the user's profile should not be loaded.
This causes the application to load more quickly, but
can cause some applications to malfunction.
/profile specifies that the user's profile should be loaded.
This is the default.
/env to use current environment instead of user's.
/netonly use if the credentials specified are for remote
access only.
/savecred to use credentials previously saved by the user.
This option is not available on Windows XP Home Edition
and will be ignored.
/smartcard use if the credentials are to be supplied from a
smartcard.
/user <UserName> should be in form USER@DOMAIN or DOMAIN\USER
program command line for EXE. See below for examples

Examples:
> runas /noprofile /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.
NOTE: /profile is not compatible with /netonly.

sounds good, gonna try it!

try this one
http://www.wineggdrop.com/RunAs.zip

Gonna check it, it looks nice

Hmmm very good, didnt know

really interesting :-) thx

Runas.exe is not scriptable ... you can only supply the pass manually (not in the command line)
for this purpose, you can find runas-x.exe