The image is in that format. I will try to mess around with it some more. To try and shorten my testing cycle should I be able to see the image in the navboot file as soon as I exchange it, or do I need to recompile the cd-image and extract it again?

Two more questions:

1) I'm not sure about this step- 6. Now you're ready to make the new ISO image. On the top left window, click the first entry (it will look like 20060220_120036) edit the line to reflect "NAV_SW" and press return"
- I do not see anything that looks like " 20060220_120036" in UltraISO ?

2) The tutorial indicates- 7. Goto File->Save as and name the file of your choosing with "file type" as "mdf,mds".
- In a previous post it was mentioned that mdf files can simply be renamed as .iso files and burned with Nero etc... I assume the same can be done here? Is there any reason why the file isn't saved as an .iso file?

Thanks guys. Sorry for the **dumb** newb questions