Multi-ISO boot from USB Drive

[Dragon]

Hi,

I have seen several of MSDN DVDs that contain multiple OS products. Upon
booting from them, you get a choice of which OS to install. We reload OS all
the time on our test beds when reconfiguring testing labs for different
configurations. I would to be able to do something similar but with a USB
drive. I would like to copy/add several bootable ISO files onto my USB
drive, then boot from the USB and get a choice to load one of the ISO images
for installations. Does anyone know of any way to do this?

Thanks.