exes Controlling others

[Surrendermonkey]

I have two VB6apps, essentially different versions of the same app. I wish to write a third which when run, does nothing more than scrutinises, say, a database and runs the exe most appropriate. The idea being that I can then distribute all three at once, since users' circumstances will change.
The database stuff is no problem, but what is the simplest way to run an exe from another?

[Lothar Haensler]

use VB's Shell command:

Shell "notepad.exe arguments"