I'm sorry that I have to confess that I don't know much of anything about paper money. I can't even keep the stuff in my bank account very effectively. The best place I know of to find out about paper money is the rec.collecting.paper-money newsgroup on Usenet. To access Usenet, you will need a news reader program. Netscape and Internet Explorer provide rudimentary news reading facilities. Contact your ISP for information on how to attach to a news server. The folks on rec.collecting.paper-money can help you with evaluating your collection.
One of the better books on identifying and pricing United States paper money is:
The Official 1999 Blackbook Price Guide of United States Paper Money (31st Ed)
by Marc Hudgeons, Tom Hudgeons
http://www.amazon.com/exec/obidos/ASIN/0676600719/ref=sim_books/002-8071172-9981616
(And, no, I don't have a copy myself.)You might also choose to join the email list at: http://groups.yahoo.com/group/banknotes
If you don't have access to a news server, or the people on rec.collecting.paper-money or banknotes can't help you, try Alan Herbert. He is so knowledgeable in the hobby that he is called the "answer man". His e-mail address is: Answerman2@aol.com. If he doesn't know the answer to your question, he certainly knows someone who does, assuming that anyone can answer your question. Alan does not give appraisals.
Please don't email me questions about paper money. First, I honestly don't know much of anything about it. Second, it keeps me from getting to questions I can help people with.