Tell Salling Clicker to hold down a keyboard key?

Hey guys. I just signed up so please forgive me if I seem uneducated in the ways of applescript.
I wanna write a little script to get my bluetooth phone working with Front Row via Salling Clicker. I downloaded one from http://www.snarb.tk/ but it gives me a problem: It sometimes clicks back (esc) twice when I press back once on my phone - very annoying.
So I managed to make one that worked fine using scripts like the one below. However, when I hold up, down, left or right on my phone, it will not hold on Front Row, it only does one click in that direction.
So, how do I write a script that will tell Salling Clicker to simulate a key being held down as I hold it down on my phone?

Cheers

James

tell application "SEC Helper" to simulate keyboard virtual keycode 124
return