There are 3 ways of doing this; using the registryto store a number - and a
macro to increment it and paste it to your proposal, using a macro to
increment a stored value by 1, and using a text file to store the number, and
a macro to increment and paste it to your proposal. Check out J E
McGimpsey's site to see how to use the registry. I think this method is
best, as nobody is going to accidentally wipe your number.
http://www.mcgimpsey.com/excel/sequentialnums.html