Using multiple search inputs...

[noelgreen]

I have a search on my page that contains 3 elements...

1) the text input
2) a dropdown box of categories
3) a dropdown box of tags

I need someone to be able to type something in the field, select a category, and select a tag then press "search" and see only the results that fit those items.

The input field works fine.
The input field with the categories dropdown works fine.
If I remove the categories dropdown, the input field with the tags dropdown works fine.

What doesn't work is all three together... basically the 2 dropdown boxes are conflicting, or WP doesn't know what to do with them.

So, my question is, how can I use 2 dropdown boxes in a search query?

[noelgreen]

Here's the site... you can see what I'm trying to do.
It ALMOST works... but doesn't quite work yet... any help would be so appreciated!

http://www.couponfridge.com/2.0/