Old shares exchange after merger

by Adam
(SLC, UT, USA)

RFMD Acquired Sirenza Microdevices

Under the terms of the merger agreement each outstanding share of Sirenza's common stock was to be exchanged for a combination of 1.7848 shares of RFMD common stock and $5.56 in cash. Outstanding options to purchase Sirenza stock will be assumed by RFMD and converted into options to purchase RFMD stock. Based on RFMD's closing stock price on Friday, August 10, 2007,

It is now 2011 and Sirenza no longer exists, but I still have original stock certificates, how do I exchange them for the RFMD stock and cash?