To view them you will need to move the files to your "C:\Program Files\Valve\Steam\SteamApps\(USERNAME)\team fortress 2\tf" directory, open the console in tf2 and type "playdemo DEMONAMEHERE.DEM". The maps used in the demo files will need to be in your "C:\Program Files\Valve\Steam\SteamApps\(USERNAME)\team fortress 2\tf\maps" directory.
I think we are planning on having another one soon, this coming weekend has turned out to be bad for me, and I have been insanely busy so I did not manage to get a post up. I literally have been home long enough to sleep, shower, and then leave for work.
Sister just bought a house so I was helping her with that Saturday evening, Sunday, Monday, yesterday I went to a concert with some friends, tonight there is a Volleyball game, I think tommorow might be my first day I can relax!