The bluetooth was not difficult to wire up. The iogear devices have a 9 pin male connector for serial data (wired as a DTE, like a computer), and a coaxial power jack for power. The devices come with wal warts that supply the 5V DC power. On the robot side I used a 5V regulator on a small pcb to provide power to the servo controller and the bluetooth. (this isn't visible on the video, as it is inside the small plastic box). If you look closesly in the video you will see a short black and red wire going from the plastic box and plugging into the side of the bluetooth.
The iogear bluetooth devices I used actually have pretty bad reviews online if you visit the various sites that sell them. They are intended just as a cable replacement. I have had some weird troubles with them when I tried them on other projects. If you send them a nice string of characters with uniform spacing, what often appears on the receive end will have delays of up to tens of milliseconds between characters. This didn't prove to be an issue in this application, but be warned that these may be a headache depending on how they are used. I haven't tested them to determine maximum range, beyond about 30 feet.
Sometimes there is a delay between the mouse click on the interface and the transmission of a character via the IO-204. Usually the response seems instantaneous, but the delays, when the do occur, can be a second or two from what I have observed so far. So, any robot controlled in this manner probably shouldn't be going extra fast or you will hit things.
