For what it's worth: My daughter runs Outlook 2007 under Win 7. I don't remember how we resolved it, but we eliminated or reduced the occurrence of Enter Network Password while the PC was in a "home" environment. Right now, however, she has the PC with her on a trip, and because she's using hotel wi-fi arrangements, she changed to a "public" environment, and the darned thing came back, in spades. Does this give anybody a clue?

One more stupid question. What does the message mean? Is it asking for the email password for the account, or does it want something else entirely?