Oh that would be great. Didn't even think about that. Is there a way to force every key map to change released to pressed? Adjusting them all will take a while. Allthough it's mostly the characters, not the numbers, so that's doable.
There isn't something built in at the moment, but what you CAN do is open up your ISBoxer toolkit profile XML file in notepad, and do a "Replace..." (CTRL+H) to replace any instances of
Code:
<Mode>OnRelease</Mode>
with
Code:
<Mode>OnPress</Mode>
Save it, open it back up in ISBoxer and Export