Make your Raspberry Pi wireless and be able to hide it away wherever you have a power outlet handy, just follow these steps:
1. Buy a Edimax EW-7811Un 150M 11n Wi-Fi USB Adapter, great plug and play adapter.
2. Follow the steps on http://www.savagehomeautomation.com/projects/raspberry-pi-installing-the-edimax-ew-7811un-usb-wifi-adapte.html
3. Follow https://www.modmypi.com/blog/tutorial-how-to-give-your-raspberry-pi-a-static-ip-address to set a static IP address
Consider upgrading your software and firmware by following https://raspberrypi.stackexchange.com/questions/4698/how-can-i-keep-my-raspbian-wheezy-up-to-date
Good luck! Have fun with your pi. :)