Hello Paul: I'm trying to update BDI 4.38 to the 4.50 version and am having difficulty. I'm attempting to avoid the format and reinstall method since its time consuming and am trying Synaptic. Being completely unfamiliar with Linux (but willing to learn) I've done the following: 1. Burn the .iso image with BDI 4.50. 2. Launched Synaptic on my linux system. 3. Synaptic prompts me for a root password which allows me to log in. 4. I think what I want to do next is to use the "Edit" pull down menu and "Add CD-ROM". When I do this however I get an error message that says: "E: Unable to locate any package files. Perhaps this is not an APT enabled disc". The CD-Rom seems to be accessed while this happens so I think my hardware is functioning as it should. I'm wondering if I am doing something fundamentally incorrect or I perhaps have the wrong file burned to allow Synaptic to upgrade. Any ideas? Thanks, Craig