in reply to
inserting checkboxes into yes/no field in Access
A yes/no field in access works by you inserting a 1 or a 0. So don't try to insert text. Check your vars and then insert a '1' as appropriate.
However, recall that if a checkbox is not checked then it won't appear in your CGI query variables.
Unless you can switch to radio buttons (so testing for the 'off') you'll need to makre sure you have the correct logic. Ie: if this query variable isn't present then insert 0.
Or alternatively ensure all your yes/no fields default to 'off'.