Please help -

I finally got some of my files moved to my card to fix the memory issues I have with my Treo, and now I need a program to help me get to my datebook5 app. I have the trial of HBX, which is supposed to allow me to reprogram my datebook button (the full version does all the buttons, but I dont want to buy until I'm sure it works) and it appears to understand waht I want (go to launcher, open datebook5) but when I push the datebook button, it doesn't go to the datebook5.

I have HBX on my card, does it have to be on my handheld? My memory is so clouded on the handheld I hate to add anything. If I put another program on, I can't get to the web for a lack of memory.