I've used EasyBCD for two years, to dual-boot Windows 7 and XP Pro x64. How did I not know about this feature!!!?!??!!
Wow, thanks so much severedsolo; works great with my ATI Home 2010 boot iso. No need any more for an external USB device, although EasyBCD apparently lets you easily make those as well.
Your pics are out-of-date though--currently you click the "Add New Entry" button, then look below at "Portable/External Media" and select the ISO tab, the "Add Entry". Finally I clicked on Edit Boot Menu to lengthen the menu timeout a bit.
Thanks again--I learn something new every day here!