The coin switches at the bottom of the coin door are exactly like all the other switches on your control panel, except that they probably have .250 terminals instead of .187 terminals. Just wire them up like any other switch.
The lights in the coin slots cannot be lit via the I-Pac. The "standard" way to do this is to connect either the +5V or +12V (depending on your lights) from a hard drive connector on the computer to the coin door lights, or use a separate power supply.
--Chris