Fireplaces, Heating Stoves, Flues and Chimneys - How Do I Remove This Pipe?

We removed a wood burning stove and are left with this pipe sticking out of the wall (can we not post pictures?). I'm not sure how to remove it, as it doesn't seem to budge. How is it attached? And how far into the chimney?

When we get it out, then what? Do we need to patch the chimney somehow? We are undecided about whether or not we'll take out the brick wall, if we do we'll need to put up new wallboard, which will cover the hole from the inside, is that sufficient?

Thanks for any help.

You can post pictures. Just upload them to a site, such as Photobucket, or to a website, and give us the URL, and we will look at your situation.

thanks, Chandler. I know how to do it, but vb code appears to be turned off in this forum, for some reason.

italics?

See what I mean?