[nhawk]

That is a perfectly correct and commonly used regular expression for checking email addresses. The only problem with it is that any top level domain can be entered. This is common practice so the programmers don't need to change the code every time a new TLD is created.

I haven't looked at the code, but in vB4 I do believe the email address entered is converted to lower case in the code and then checked. So I would imagine they do the same thing in vB5.

I personally can't seem to duplicate the problem unless I actually enter an invalid email address.