Mike, The Convergent machines did indeed run an OS called CTOS, though usually they weren't seen as Convergent machines. After Sperry-Univac and Burroughs merged into Unisys in 1986, they bought Convergent and continued selling the machines. The ones labeled Convergent ran CTOS, while others were labeled Burroughs and ran BTOS, which was really the same darn thing. However, these machines were OEMed very frequently, which is why I say it's unusual to see them labeled as Convergent. Those early machines were termed "Miniframes" , i.e. small mainframes. Later on, Convergent became one of the billions of clone PC makers, which didn't last long, and then Unisys discontinued use of the brand name. I have no clue what kind of CPU the things have, but if you want to get rid of them... ;p Anyways, I hope my little rant was at least somewhat informative. Will J ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com