2 serial ports

Hi

I looked at the (new)softWareSerial, that would do the trick I suppose.

So the BT interface and the tx/rx pins on a bluetooth arduino just mirrors each other?

Maybe somebody can recommend the right solution:

I need to send and receive serial from the roomba over a cable and pass on commands and feedback wirelessly to/from my computer.

I thought a BT arduino would be perfect, but maybe better with a Mega with a zigBee or BT shield?

thank you

fubbi