I have been happily using MacOS 9.1 for serious production work for some time. I would like to switch to MacOS X (Jaguar), but I have some questions that forum members might like to help me out with. Can I install OS X over 9.1 without problems? will a clean install do the job? I am planning upgrade my major apps, but some programs I have are not yet OS X operable and still need 9.1. Since I need to run them in Classic mode, does the OS X install put 9.x on my system? or will the current system folder be intact and usable from OS X? Are there any problems/issues that I need to know about? Will the install retain things like communications settings? Thanks for your help.