hhhhhmm is really depends on the dvd player you got.
http://www.dvdrhelp.com/dvdplayers
go to that link and type in your dvd player: The company that made your dvd player and the model number. I don't personally have a dvd player but to my knowledge if you do burn an avi file on a dvd-rw it should play it on. Plus even if you burn a .avi file on a dvd-rw and it doesn't work it doesn't really matter cause the dvd is a re-writeable dvd, so as a result you can record on it and erase it as many times as you want. Mind you if it doesn't work i would convert the avi files you have to vcd and then burn.