see this tutorial for details on working with options:
http://www.webassist.com/community/tutorials/view_tutorial.php?tid=63
This tutorial is geared towards using Select Lists. Using Checkboxes would not be a good idea since that would allow for multiple options to be selected, you could covert the select list to a radio group though if you like.
the key is to make sure that select or radio buttons pass the selected ID, you then use the form element post for the lookup recordset to lookup the selected option.
