I want to be able to put into the website flash games. Is it possible to get them off the net and put them in? I'm using dreamweaver mx

Yes it is!
Try http://www.flashkit.com/movies/Games/ for some downloadable games.
I'm not familiar with dreamweaver but in frontpage you would use Insert>Advanced>ActiveX Control to insert the file on a page. No doubt it is similar in dreamweaver.

Volty

Also try Miniclip.com - they've got awesome games over there, well addictive