Customizing machines from an image file

Hello, We are trying to setup up multiple machines for separate users. We would like to know of an easy way to make an image of one of the machines to easily customize for another user. What is the best way to handle this? So far, we have tried renaming the original user but that didn't seem to work too well as there were problems with the sound module and all the links still point to the first user. It looks as if we will have to customize each machine which will prove to be a time consuming task. Any ideas on how to make this easier would be appreciated! Thanks! Jon