Is there anyway to restore access to setting up the 'companyweb' back to the main administrator account? Thanks www.trials-uk.com

I have uninstalled companyweb then reinstalled it but still it asks for my username and password 3 times then goes to this error page: Server Error in '/_layouts' Application. ---------------------- Runtime Error Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine. Details: To enable the details of this specific error message to be viewable on remote machines, please create a tag within a "web.config" configuration file located in the root directory of the current web application. This tag should then have its "mode" attribute set to "Off". If anyone could help I would be most grateful getting very frustrated with this one! Thanks alot www.trials-uk.com

I have used sharepoint central admin to change the companyweb administrator to another user on my network and now I am getting the following error when trying to log in on the new username and password: The Local Security Authority cannot be contacted What does this mean, has anyone got any ideas? www.trials-uk.com