Hi. If you have the programming manuals, I can point you to the right places to do the programming and show you how to use the tables.
If you need manuals, they are here:
Omron RS3410
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http://the-checkout-tech.com/manuals/cashregisters/Omron_RS-3410_programming_manual.html
Sharp ER-A330
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http://the-checkout-tech.com/manuals/cashregisters/Sharp_ER-A330_instruction_manual.html
Just let me know when you have them and I'll talk you through it.
Registerman, July 2010