Hi, I have an Excel 2007 based application to calculate the savings on a home mortgage when solar power is used on the home and the savings in power cost &/or credits paid by the electricity supplier are added to the required mortgage repayments. i am looking for either a web based solution that i can imbed into our web page (wordpress) or a stand alone solution that is not copyable and can be activated only with a username and password which expiers every month or quarter so i can charge a subscription fee for its use. The calculator should have an input screen where the details of the mortgage etc can be entered (so this is a bit like a normal mortgage calculator) and then give an output that gives the results and can be printed off as a PDF (and/saved for future reference). the keys features need to be protection from piracy by use of a password and username that expires and then requires a renewal to remain active. I can supply the Excel version for illistration of what i am looking for but need assurance that my IP is confidential.
Can anyone assist