Bloo - you should look at a Whackem' Tablet, I mean WACOM Tablet. Best bang for the buck (and when it's a few bucks...) but they have come down a lot in price. A new 4x5 USB one runs under $100. Large 18x18 can run into the thousands but you don't need that...
Here's a couple examples of a drawing/digitizing tablet (Iwant one but I'm gonna haf to wait

)
http://www.compusa.com/products/prod...ct_code=275321
http://www.compusa.com/products/prod...ct_code=286566
Go to
www.pricewatch.com and search for graphire