[BlueSkyJaunte]

Er, eh? What?

And .iso file is one that you burn as an image to a CD. No conversion necessary. Any CD-writing software should let you write it. Look for "write an existing image to CD" or something.

Then you should be able to boot directly from the CD.

Think of an .iso as an "image" of what the raw bytes on the CD would look like if it were read off the CD one bit at a time into a huge file. Then when you burn the image to a CD, it duplicates the file structure (etc.) on the CD exactly as it was put in the image.

(edit)

Looks like you may have already done that....I just misunderstood the way you stated it.

To enter the BIOS setup you may have to hold down DEL (or F2, or something) while the the machine is starting (before Windows starts loading). Then there is usually an option to change the boot sequence (like 1.HD 2.CD 3.Floppy or something). Just change it to boot from CD first, then HD second, then Floppy 3rd.