Welcome to the forum, thanks for the post, wish I was retired too...(and it's always a plus to find a programmer from 30yrs ago).
Two things to think about:
1. Instead of using a script, why not autoenter the data? File>Define>database, select your field and double-click and you should get some autoenter options. Use these to set default values instead of scripts.
2. If you must use scripts (or feel more comfortable with them), its OK. Instead of using "Insert Text", use "SetField" instead. And drop the excess .
Setfield doesn't require it to be a calculation...in the calculation box just type:
with the double-quotes.
Does that work for you or did I miss something?
I chose to use your first option -- THANKS.
I did try the Set Field as you suggested however version 10 will not let me write it with the ; and not the. And with the  it does not work.