for the future I would alter your 100 rules so that instead of calling banner directly they call a second rule which is based on a calendar.
That way you have a way of scheduling when you get your banners.
Step by step that would mean...
a) create a new calendar eg. MYCAL( or use an existing one ) you can set to off during maintenance periods
b) create a new rule e.g 'MYBanners *' to create the banners
text - &(2

action - BANNER
calendar prof (on the Config tab) - MYCAL
You can now OPRELOAD and test your new rule with
cawto MYBanners this is a test banner
c) now the painful bit... change your rules that currently create banners....
- edit the text to have the word MYBanners followed by a space at the front of the text
- change the action to EVALUATE
This also gives you flexibility for later should you decide to do some other global action along with sending a banner, you only have 1 rule to change. An example would be a NETSEND or email using a command line mailer.