This post made me curious as well.
I did a quick search on Databiz' support sight and all it stated is exactly what
10sevol stated:
Document ID: 14189
Last Reviewed: 7/1/2008
Problem:
The NUM lock does not stay on in Sheet To Go when I try to type numbers.
Solution:
This is normal behavior on a BlackBerry smartphone. If you press the Alt key once, the NUM lock will turn itself off after entering one number. In order to keep the NUM lock turned on so you can enter multiple numbers, press and hold the Shift key and press the Alt key. The number lock mode symbol should apear in the upper-right corner of the screen, and will stay on until you turn it off (by pressing the Alt key again).
I know one of the genius workaround blackberry guru's on this site has a viable solution to this?
David