I have HP4500n for Mac, and now I want to connect PC to it also. I have 3 mac and 4500 and PC connected using Lynksys router. I have a older OS on Mac and not being able to share information between mac and pc is ok. But I want to use same printer. Beside ethernet connector, I have Parallel E10 2 in the back of 4500. I have not found any cable that fit that and PC at the same time. I wonder if I need to install something to 4500.