So you opened minecraft.jar with WinRAR, dragged all the required files from each downloaded mod into the minecraft.jar or required folders (as specified by the instructions with each mod), you deleted the META-INF folder, and it still doesn't work?
You messed it up somewhere, mate. Couldn't tell you where, though.
Make sure you didn't drag the files into a folder within minecraft.jar rather than the jar itself. If you're dropping them into the window and your cursor is over a folder, you're putting them in that folder, not the jar.