I've looked at the Login page, Login.aspx.
What I want to do is bypass this login page and call the launch messenger directly passing in the username with a known username from the database.
I have tried calling (from Login.aspx)
FormsAuthentication.RedirectFromLoginPage("user451", false);
with the rest of btnLogin_Click commented out.
This appears to work OK, logs you so that you get the username at the top of the page and a logout button, but when I select Messenger, it launches - but it is not logged in - and I get a anonymous login not allowed message.
Any advice much appreciated.