Not *that* simple a thing to do. The "parameter block" has to be set up correctly (and pointed to correctly). I recall, in particular, having trouble with the command line. If you're not passing any parameters, you still need to have a zero "count", and a carriage return.
The only way you'll run a batch file would be to run command.com, with the correct command line to run your batch file, and exit. I'm not sure what a vbs file is - if it's compiled to an executable, it shouldn't be a problem.
If you can't get it working, post the code.
Best,
Frank