This thread will get you started on using advanced/discrete codes. [Link: remotecentral.com]

I'm not sure if it was plainly stated in any of the referenced links, but you can either use the key mover procedure to assign the code to the OFA remote and then send the command to your universal remote, or you can send the code directly to the universal remote by putting it in learn mode and then pressing set and the 5 digit code, which will then transmit it to the learning remote.

Either procedure will work, but one or the other might work better for you.