I've been trying to install the RPIO module onto my pi. so far, no luck because my pi is without internet at the moment (I only have internet on my laptop through mobile tethering). Does anybody know if there is a copy of raspbian wheezy with the RPIO module already installed? If so, post a link in the answers/comments, or upload a link to the file on here.
No, RPIO.GPIO is not installed by default in the Raspbian or raspberrypi.org images.
You will need to install from the github.
EDITED TO ADD
If you have access to the internet just download https://github.com/metachris/RPIO/archive/master.zip and copy it to the Pi SD card. If you have to use Windows put the SD card in a card reader. The boot partition should be visible. Copy master.zip to the boot partition (normal copy) then place the card back into the Pi and reboot. Copy master.zip from /boot to where you want it. Remember to delete the copy in /boot to save space. Follow the github instructions to install RPIO.
Note that installation requires a few not installed by default packages such as python-dev.
Without an internet connection installation is a bit more difficult, but still possible. The package can be found here: https://pypi.python.org/pypi/RPIO
Near the bottom of the page is all of the recent versions.
Installation of a downloaded package can be done with