C:\Documents and Settings\All Users\Application Data\MediaPortal TV Server\gentle.config
<DefaultProvider name="SQLServer" connectionString="Password=;Persist Security Info=True;User ID=sa;Initial Catalog=TvLibrary;Data Source=htpc\SQLEXPRESS;" />
<DefaultProvider name="SQLServer" connectionString="" />
i wouldn't think anyone would be regularly changing the hostname of a PC and changing SQL user/passwords