It sure looks cleaner and easier than <i><a href="http://nu2.nu/bootcd/#multibios" target="new" rel="nofollow">Bart's Almost-Incomprehensible Multiboot CD Page</a></i> (as I think of it)!  Despite my comprehension difficulties with that one,  I've gotten it to work a couple times.  I was then mazed and astonied when trying it out in the field and on some computers it correctly offered a menu but on others went right into the first choice only. Some older BIOSes can't handle it, apparently.  So here's hoping the Magic ISO people have overcome that.  

It doesn't seem to be freeware.  Did you find a free trial version?  If you paid for it, please get reimbursed! (If it's installed at Ray, ask Mary first; otherwise Shaz, who claims he's now got this down to a routine :) !)
  
I had forgotten about the .bat file at MLA.  Somehow we've been edting a vbs for the outline at least of location-based printing; maybe that was with that same trick of calling the vbs from the bat, though it doesn't seem to be there any more.  We've tossed around the idea of replacing the bat file altogether with a vbs on the model of other schools' GPO logon scripts; maybe this is a good prompt to get that done.  On the security issue, probably it can be set read/execute by Everyone but not modify?  Anyway, thanks a bunch for this roving contribution!