Beauman, the forum staff do not live here 24/7, please understand we do have lives outside of the support forums.
As to the problem you are encountering could you please provide a site URL and if possible a server number. What message are you getting when you try and access the control panel btw? Is it an incorrect password or another form of message?
Jack of all trades in development, design, strategy. Working as a Support Engineer. Been here for 12 years and counting.