>How can I set the ENTER key to act as a TAB?
>
>Currently when users complete a field and press ENTER the next BUTTON in the TAB ORDER is pressed. I would like them to move to the next field in the TAB ORDER.
>
>There must be some overriding system setting like KEYCOMP to adjust this behaviour but I can not locate it.

I don't think that button gets pressed (may be you press ENTER two times instead of one). You can intercept ENTER key in control.keypress event and replace it with other key there, e.g.
IF nKeycode=13
KEYBOARD '{TAB}'
ENDIF