John,

Users impersonating other users would be a huge problem; imagine if a user was able to change the My.User.Name string from "domain\fred" to "domain\bob" and steal all of Bob's personal data.

That's why I came up with the whole 'magic word' thing, to eliminate this problem.

I'm going to keep researching this today and post back here when I find some answers - surely somebody has come up witha a solution for this before!?


Cheers,
Ben