hid install how to

I purchased an HID kit from http://www.simplyhidkits.com/ (i guess "cheap ebay kit"?) I received the package, and was wondering if there was anything else I needed for the install to be successful? This is what is included: (a/b) 2X 35W HID head lamps (c) 2X ballasts (d) 12X zip ties (e) 2X...