search custom fields radio buttons – front end

i have assigned metadata to all posts in the form of custom fields. i would like to have a search page with radio buttons that when executed searches the custom fields and returns posts that match.

example:
(I have assigned the specific values below to the custom fields of each post)
custom field 1. Yes, No
custom field 2. native, non-native

user can select radio button options ‘Yes’, ‘No’ for field 1 and/or ‘Native, non-native’ for field 2. hit ‘search’ and custom fields are searched. I’ve done this with mysql/php in past, but i figure maybe there is a plugin or tutorial that will get me there.

basically, i want to allow a user to run a conditional search with selected options.

any help appreciated.

barrie