You will have to download Avrstudio from this link: http://www.atmel.com/dyn/products/to...p?tool_id=2725
I don't know the difference between the two versions, perhaps you can find that detail on the original page(also note that there is a even newer version for the more modern attiny2313).
You use one of the .asm files and assemble it to a .hex file in avrstudio(the .inc file is also needed). After that step you program the hex file into your microcontroller.
To get you started using AVR's go to these pages: