http://en.wikipedia.org/wiki/SPSS
Statistics program

THINGS TO TRY
1. Remove all the metallic objects from the front of the console. Or, move the console away from any metallic surfaces, such as entertainment cabinets.
2. Move the console, or move the other wireless devices away from the console.
3. If other wireless devices don't work correctly, move the wireless devices or move the console to determine whether interference is causing the issue.
4. If you continually receive the "Please reconnect controller" error message while you're playing games, or if the four green lights on the controller flash continuously even after you try to “bind” the controller with the Xbox 360 console, there may be a problem with the controller. Contact Xbox Customer Support.

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MORE INFORMATION
Metallic objects may shield the wireless signal. This prevents the signal from reaching either device. Some faceplates may contain metal and may interfere with the wireless signal between the controller and the console.

Note All licensed faceplates have been tested and will not interfere with licensed wireless devices.

The Xbox 360 Wireless Controller runs in the 2.4-GHz range of radio frequency and is designed to share the frequency with other devices. However, sometimes the wireless controller may not function correctly or may interfere with other wireless devices.

Make sure the batteries are new also.

Hope this helps.

Dawn