Ive asked this question before, and the only way that I was able to do it was to Install
Mortscript and
VJPhoneTools (and create the following script
InsertNameHere.mscr
Code:
Number="INSERTPHONENUMBERHERE"
Run( "/program files/vijay555/vdialer.exe",&Number)
Assuming that VJPhoneTools was installed to the device. Then Map InsertNameHere.mscr to whatever/wherever you want