Recently I tried tlo install modloader to help me get Optifine on my computer I need help as whenever I put the modloader files in my minecraft.bin the modloader files go BEHIND the files already in the .bin folder is this supposed to happen if not can you help me?

When i do that the files go  behind the files already there is that supposed to happen?

If you are downloading Modloader for Optfine you don't need to, Optifine don't run on Modloader if I remember right, I use Optifine and did not download/install Modloader and it works like it should :)

But if you want it anyways you do: START ->   %Appdata% ->   .Minecraft ->   Bin ->   
Open Mincraft.jar -> Drop The Modloader File In To The Minecraft.jar -> Delete META.INF (Very Important) -> Play!

I suck at explaining stuff so if it helped your welcome :p

Video example, they help much more :)

http://www.youtube.com/watch?v=nFY94W2vHmc#ws

Yes it is the same way, also I installed optifine again yesterday on a different computer and now I know it don't need Modloader

The best site for optifine is the official one:
http://www.minecraftforum.net/topic/249637-132-optifine-hd-b3-fps-boost-hd-textures-aa-af-and-much-more/