updating a database

Hello, What i'm trying to do certainly doesn't seem hard conceptually, but coding it has been rough. I'm wondering if anyone has anything similar. I've got a database with records. The first time the page is accessed the submit button won't be selected, so display information about the record with a checkbox for selection. If a user selects a checkbox and hits submit, display only that specific record in a form for editing, once editing is complete feed the edited data back to the database. I'd like all this to be done in a single sticky file. If anyone has any code similar to this i'd appreciate getting a look, mine is nonworking. Thanks. Dave.