Different, but something like this might work for you.
CLCL is clipboard caching utility. (http://www.nakka.com/soft/clcl/index_eng.html)
(Actually that particular program might not be the best for your needs. There are others out there that hold a specific number of "fixed" text strings.)
For those who might be looking for a similar solution I'd recommend ArsClip (http://www.joejoesoft.com/vcms/97/). Highly customisable, and allows the user to store custom text strings in groups that load depending on the program (naturally, you can switch to any other group at any time).