Sorry Andrew, I realised that was a bit of an erroneous statment as soon as I sent it.
The userform is very basic, with a text box (textbox1) and a command button (OK).
It has to be a userform as obviously the password needs to be hidden characters and I'd rather people got access via the click of a button on the sheet rather than trawling through the menu's as the password resets on sheet activation and it could become too cumbersome.