using standard arduino as breakout for mini pro

It should be possible to use a standard arduino 328 board as a breakout USB connection for a mini pro. Holding the reset, connecting 5V, GND, TX0, RX0 to the mini pro. But where do i connect the DTR signal from the mini pro ?

Any hints ?

Yes, insted of connecting the dtr, connect the two reset pins. Then you wont have to hold the reset button, and it will work normally. I do it all the time.
Make sure you take the chip out of the usb board.

Could you provide a (simple) drawing of all the wires ?