Thanks! With that link, toomanyitems successfuly added to minecraft!  I'll only download mods from minecraftforum! However I want to ask 1 more thing, I hope you'll see this: Can I use for instance a 1.6.4. mod with 1.7.2 forge/1.7.2. minecraft?

Hey guys! I hope you can help me. I downloaded 1.7.2. Forge from the official page. Then I opened the jar file, installed forge, and got the massage: it was successful. Then I started (1.7.2.)minecraft with forge profile and then I closed it. I downloaded toomanyitems mod from 6minecraft, just to try if my forge works. I dragged and dropped my jar file to the folder: .minecraft\mods. I ran minecraft and the mod wasn't added to minecraft. (It wasn't even in the mods menu.) I started a new world, and the toomanyitems wasn't in my inventory. I didn't get any crash. I got windows 7, and my video card should be good enough.

 

Bence