Holy guacamole! Hmm...where to begin. Well, first, let me apologize for my rudeness. I meant to insert a little smiley (no, really, I did!) and I did not. My post was not meant to be so hostile. Second, let me apologize for my ignorance. On our entire network, only 2 of our routers are 4500s and both are outfitted with 2 ethernet and 8 serial ports. I had no idea there was ALREADY an OC3 interface available for that router, nor did I plan on learning such because we've moved on to bigger things. FWIW, I apologize. Had I flipped to pp139 of this year's Ciscoble, I would have spared my damaged soul the embarrasment of trying to be funny. Doggonnit, and I thought I was going to be able to give up being a jerk by Christmas. Carl