How to run command on remote/client computer from server

I need to run a command in remote/client computer to force that pc to do an update. Usually i will run this command on local pc

wuauclt /detectnow
wuauclt /force

but now i want to execute that command from server so i don't need to do it manually on all over remote/client computers.
After googling awhile i found PsExec (free tools from microsoft) can do it.
Download pstools and extract it into C:/Windows/system32

Examples

The following command launches an interactive command prompt on \\marklap:

psexec \\marklap cmd

This command executes IpConfig on the remote system with the /all switch, and displays the resulting output locally:

psexec \\marklap ipconfig /all

This command copies the program test.exe to the remote system and executes it interactively:

psexec \\marklap -c test.exe

Specify the full path to a program that is already installed on a remote system if its not on the system's path:

psexec \\marklap c:\bin\test.exe

Run Regedit interactively in the System account to view the contents of the SAM and SECURITY keys::

psexec -i -d -s c:\windows\regedit.exe

To run Internet Explorer as with limited-user privileges use this command:

psexec -l -d "c:\program files\internet explorer\iexplore.exe"

References:
http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx