Minecraft Installing - How to install a basic mod

Today this is gonna be a tutorial on how to install a mod (Not every mod).
Some mods need these:
Modloader
ModloaderMP (Modloader Multiplayer)
AdioMod
Forge Client

Before downloading any mods, you need Winrar or 7- Zip (Don't have to have both)
Winrar Download: www.rarlab.com/download.htm
7- Zip Download: www.7-zip.org/download.html

Once you've done that it, it's time to install a mod!
Steps:
Windows XP/ Windows 7
1. Go to Run or type it in the search bar in your "Start" button in the corner
2. Type in %appdata%
3. Click your Roaming folder
4. Click the folder .minecraft
5. Inside the .minecraft folder, click bin
6. Right click the thing called Minecraft
7. In your right click list it should say "Open With", then it has options to open it so click "Open With Winrar" or "Open With 7- Zip"
8. Then a big folder should appear named Minecraft.jar and keep that to the side
9. Go to the mod you downloaded and double click it
10. Drag all mod files into minecraft.jar
11. (MOST IMPORTANT) Delete META- INF
12. Have fun

If you have an questions or want download links, comment below.w