Try use this:
oShell = CreateObject("wscript.shell")
oShell.run('calc.exe',1,1)
Release oShell
this parameters :
oshel.run(command,type of screen,wait)

screen =0 - no screen
1 - screen is normal
2 - screen minimize
3 - screen is maxmaze

wait =1 - wait end of process

by
Fabio