Using ImageCast to deploy image to iPAQs

We have over 100 legacy-free Compaq iPAQs with the v1.14 BIOS. We are unable to deploy images using the PXE support that ImageCast provides with their PXE server. The PC will just reboot while loading the boot image. If we use Compaq’s 2.05 BIOS I need to put a floppy drive with a floppy disk in the drive to prevent the boot from failing at the DOS prompt. Any ideas?