How to bridge a stereo amplifier

You start with asking a proper question.

How to Bridge a Stereo Amplifier to Mono | eHow.com (http://www.ehow.com/how_5810964_bridge-stereo-amplifier-mono.html)

How to Use Two Bridged Amps for a Two Channel Stereo | eHow.com (http://www.ehow.com/how_7619374_use-amps-two-channel-stereo.html)

Not sure exactly what you are attempting to do, but these two pages might help you. Otherwise, as smoothy mentioned, please give us more details as to what you hope to achieve and what equipment you are using (provide makes and models).

There are many Amps that CAN'T be bridged... and some that can. There is no universal answer and without the proper information being provided we can't even know its possible with yours..