5200's!? What OS are you using on them? I still have one in the basement, it serves as a phone/fax machine. Apple states "You cannot use earlier versions of the administration application to manage Network Assistant clients." So if 4.0 is on the eMac you can't use 3.5.2 to manage it. NWA 4.0 should work fine on the iMacs. I don't know if it will work on the 5200's. You can find more info at http://www.apple.com/networking/ana That's a mini-VGA port on the eMac, the adaptor is shown here http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore?productLearnMore=M8639G/A You can buy it from your Apple dealer. Ralph