WMI call to run a remote application

I'd like to have a PHP script running on my web server (running IIS 6) that can make a WMI call and start a specific remote process on a remote computer. For what its worth, the remote process I'd like to trigger is a batch file. I've googled this extensively and can't find anything that points me in the right direction. All the sample scripts are in vbscript, but I assume I can probably do something like this with PHP as well since it has COM libraries. Any suggestions? -John