Thanks. I had sent an e-mail to the OCC asking what the difference was between version 5.0 and 6.2 since their web site provides instructions on how to keep version 5.0 on your computer and install the newer version. Here's the reply I received.
"The major difference between APRWIN v5.0 and v6.2 is that v6.2 is compatible with more Windows-based operating systems, except Vista. There are no significant changes to the way the program functions."
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Opinions expressed are my own and not necessarily those of my employer. They are not legal advice.