Disable Initial Window on program execution

The program EZCHARGE is a PC based program used for credit card authorizations that we would like to use in our small business. Unfortunately, for whatever reason, the company that provides the software hasn't been able to issue registration codes since April 2008. They have provided me with information on how to reset the 30-day demo time limit. The problem that I'm having however is that each time the program launches, a window is displayed that I have to click Try Now on to continue running the program. We're launching this program as a system process that runs the program as a background process and does not display the "TRY NOW" window but doesn't continue execution. I'm hoping that someone would be able to somehow just eliminate that initial window. The program can be downloaded at [login to view URL] The program is an .EXE file but I am not a programmer so I do not know exactly what language it is written in. I'm not wanting you to register the program or bypass the 30-day time-limit of the software - just eliminate the very first window that's displayed or somehow automate clicking the TRY NOW button.