Help with an internal HDTV tuner

I have an internal tuner that I'm trying to use, and I don't know what settings to use when scanning for channels. I don't know bandwidths or frequencies to look for. Any help would be appreciated

is this a pcmcia card in a laptop?

anyway try here:

http://www.hdtvtunerinfo.com/index.html

and search avsforums.com

Dib7700 internal tuner
MC770A is the designation on the software for it