Hi KurtHave you had a look at Mike Chen's Bizautomator?
http://www.bizautomator.com (Not aff link)
It sits in the system tray and can be activated with a 'hotkey' combo, and can fill any text input field with pre-configured text, sig files, logins, repeated emails, etc.
A bit like a multi-clipboard, but a bit more automated and with a somewhat larger capacity.
I don't have any resale rights on my copy, but if you go to the url above you'll get the full 'skinny' on it.
HTH
Kind regards
Ian