Adjusting Product Search

We need the Product search to only search the products with the "beginning" of what they are searching for.

Currently:

searching for "LBD"
Search returns:
LBD012
PRLBD012
PRHLBD018

I only want it to return:
LBD012

Because they only searched for LBD.

I only want the search to bring back product beginning with what they searched for.

that would work for product names  but not for description again something simple but is a modification that may not carry forward if you upgrade...

Yeah right now I am trying to add a drop down box to the top search. $session->get('search.search') already exists and I added a drop down to catalog\template\default\module\search.tpl and named it as mfg.

search.php:
I thought that I could use $session->get('mfg.search') or $session->get('search.mfg') and that it would work.

Im stuck