I discovered the reason why my printers were not adding even with a
different username versus computer name. It kept attempted to create a

port with invalid characters. Originally, we had done an SP3 upgrade
SP2. But after all these issues, I brought up a brand new NW6SP3
using an overlay CD. I noticed that there were differences in files in

the sys:/login/ippdocs directory. NIPP.exe, iprint.ini, and a few
had remained the same even after the SP3. I copied the new iprint.ini

over and nipp.exe and it worked.