I provide IT support for a company in the city here, they recently purchased a Phaser 8560 (I wont have the serial number, etc till tomorrow because I didnt write it down) I have set the device up on 3 computers and am able to scan to each of them without issue. I installed the Twain driver, and WIA (just like on the other 3 PCs), and the 4th computer does not appear in the list when scanning for computers. Is there a limit to the ammount of PCs that will show up in this list? Is this issue typically PC side, or Printer side? Is there a port that I need to open on the firewall (Windows 7x64, no Norton, Mcafee, etc)? The install package that I used is the one from the download section for the printer. On another note, is there a way to specify the names of the computers that appear in the list, or is that controlled by the users profile?