I would like to do this, but I just get told that:

A bootable CD-ROM disc, floppy diskette, or hard disk was not detected.
To install a new operating system, insert a bootable CD-ROM disc or floppy diskette in the drive and restart the virtual machine by selecting menu entry Power > Reset.


I am running Windows XP Pro as the host os with VMWare Workstation 3.2. I have tried using the ISO and a cdrom itself with the same result.