The beta items 1.4.7 is just a addon of items for example:
Swords,Bows,more
There can be a glitch on the bow, if it is fully charged it will look like a bow but normaly the bow is a gun

INSTRUCTIONS (MUST READ OR PACK WONT WORK)
1. Download the pack
2. Extract the zip it on your desktop
3. You will get a new items.png and ATT00001
4. Delete ATT00001
5. Locate to your .minecraft folder
6. Go to bin
7. Open the minecraft folder with any extractor WinRAR/7Zip
8. Go to gui
9. Replace the old items.png with the new items.png
10. Close all tabs and run minecraft

WARNING: YOU WILL NEED MCPATCHER RELEASED VERSION 1.4.7 TO MAKE YOUR LAVA AND WATER WORK

Enjoy!