First off, this version is limited to 10 transactions per account. Registering will lift this limitation. Secondly, you'll have a clear conscience!
You can register two ways:
Using the Compuserve SWREG service (GO SWREG), the title is QuickCalc 1.5, the ID is 8558, and the cost is only $15. This is an extremely convienient way to register shareware. You will be e-mailed a password and some background graphics to choose from.
If you don't have access to Compuserve (you really should!) you can send a check to:
GB Software
117 Central St.
Suite D-9
Acton, MA 01720
Check should be made payable to Bill Farrar, not GB Software...