Did you install the VFP 9 SP2 runtimes on all the computers?

>I have just switched to VFP 9.0 SP2. Previously, I was using 7.0. I compiled my application in 9.0, build an .EXE and ran on a bunch of computers running XP SP2. It works fine on most of the computers except a few. When, you dbl click on the executable, it just beeps, nothing happens. Can someone tell me what is going on. Please Helpppppp.