How to install Minecraft Forge 1.4.5 ?

Hi, i'm a new minecrafter for 2 week and i' really love it.
I have an problem
I tried out the new 1.4.5 pre-realese forge and it just keeps on crashing. I deleted meta-inf in both the forge folder and the minecraft.jar. My jar is brand new. It is fresh, doesn't have any mods so it shouldn't interfere with anything. Any help?
I'm really thk u

Use the latest forge build, not the recommended.