Changing a Header Button Link in a customnised Wordpress Blog

This probably won't be the same in everyones Wordpress Blog but on a customised version that I've put up at Cornwall Power Tools then I've been hunting around fro where I'd change the Href for a button in the header. The solution was in this mysql table 'wp_options' search for 'openhook_header' in the column 'option_name' in fact many things on this template are controlled in this mysql table.