how to convert avi/mpeg to iso and burn them as a DVD?

Hi, I use torrent to download the o.c. and lost, and i tried burning them onto a DVD with Nero but it doesnt let me.
I read in the forums that i should convert them in to ISO and then burn them, and that will work and it will give me more than 2 episodes on one DVD.
Can someone tell me how to do that? I even downloaded magiciso, but i dont know how to use it.

Thanks!

Helo : mranaz

when you download a avi file you want to convert it with dvd santa 4 (full version) other wise you will get water marks. when it has converted burn the files with dvd shrink (free)straight to dvd

If you can help you should help

thanks man! but tell me how many episodes can i burn in one dvd?

thanks man! but tell me how many episodes can i burn in one dvd?