This is truely need Rick, and put it in my form already.
The only thing that I remarked, and this will be for the users differnt in use than the desktop calculator:
when calculating with percents for eg. [a value], minus(-)[percent discount] (100 - 10% = ...) for which the calculator will be mainly used, on the desktop calculator the above operation will result in 90. In the access calculator this funciton is't provided. And looking in the code, this would be to complicated for me to find out.