We use Excel based panel schedules as well.
I actually prefer the idea of using pencil to fill them out. That way when the next guy comes along and changes something, rather than cross out the old use, he can erase it and put in the circuit's new usage.
Panel schedules tend to get really ugly as time goes on as they're filled out with pen, felt tip marker, crossed out 3 times, etc.
(My Marine Biology prof. used to call pencils "scientific markers"; they're permanent unless erased)
If anybody wants the Excel Panel Card files, send me an e-mail and I'll try to fix you up.