"Aaarggh!!! It hurts!!" - I mean the thread title. That's really about the worst thread title I've ever read. Seriously... -> "I need HELP.... BIG TIME....!!!!!!" -> It's _exactly_ the opposite of a good thread title. A good thread title for your thread would have said something about "burning rmvb and mkv files". And it would have been created in a forum _other_ than the HOWTO & FAQ forum, because that one is for answers only.
(I've edited the thread title now.)
Now for your problem... -> Where do you want to watch the files? That's important. If the files shall only be "on the disc" so you can view them on the _computer_, then either you can use Toast, or you change the System Preferences about handling "media" etc. - there you can set which program to automatically open when entering a disc (can also choose "none" or something like that).
Mac user since 1987. Running Mac OS X 10.8 Mountain Lion on a MacBook Air 11" & an iMac 27" and whatever's newest for my iPhone 4s, iPad 3 and AppleTV 2.
Apple Certified System Administrator 10.6, Apple Sales Professional 2008-2011, Apple Certified Mac Technician.