Read http://forums.cnet.com/5208-6142_102-0.html?forumID=5&threadID=301994&messageID=2825792#2825792
Sadly, Microsoft isn't budging on this one.
Bob
I have a problem and i found on Microsoft's support site the solution, it involved running cmd as an admin. running cmd normally of course runs the standard. no uac prompt (i have it on) appears to let me run it as admin. so my first attempt, i go to start, type cmd, its the only one there, i right click on it, when i right click, the little pop up window pops up saying explorer.exe has stopped working. WHAT!??! so it takes 10-20 secs for explorer.exe to reboot itself then everything is back to normal. so i try again, this time i move cmd to my desktop and right click, when i right click, explorer.exe stops working again.
this is strange. i can right click on anything else. i repeatedly tried right clicking on cmd, after rebooting, after a few days, it still doesn't work and it's been a week. if you'd like the explorer.exe crash info, let me know.
thanks for your help.

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