I just bought a new dryer, and the delivery men would not hook it up because the existing pipe coming out of the wall was plastic. Fire hazard. <_< So I&#39;m replacing that pipe with an aluminum one now. The only thing is that I can&#39;t figure out how to do it. It seems so simple. All I need to do is remove the old pipe first, then stick in the new one. I tried to just pull the old one out of the wall, and it rips to pieces. I looked at where it meets the outside vent, but don&#39;t know if I should take the vent off, or how, for that matter.

Anyone have any tips or advice--on exactly how to remove and replace the old pipe?