Question about Speed

Does anyone know what the fastest way to load/run and EXE file from another program is ?
I've tried Shell and ShellExecute API, Is there anything faster ?

Those are the only that I'm aware of, but if you want it to appear faster, maybe you could load the external app ahead of time, but open it to a hidden state, and then show it when the user needs it.

have you tried compiling your project, see how fast it is then before you start getting woried about speed, VB is quite slow when it's not compiled.

also, who wrote the program, If it was you, or a bloke you know then ask them to compile it as a dll, that's usually faster.