Like the title says, I want to make an ISO image of a CD.
Use
WinISO, its by far one of the best utility for creating/coverting ISOs.
I guess this would be a good time for me to ask how to do the opposite, how do you put an iso image on a cd?
Use burner software such as
Nero Burning ROM, most are capable of burning ISOs. Its just a simple matter of pressing Make CD from ISO (or Image), select the ISO you wish to create the CD from and press the Burn button.