Battery keeps dieing!

Im posting this here becuase there are some people in here that can maybe help. You guys seem to know the most.

'92 accord, battery dies.

We recently bought a new battery, and when the car is left alone for about a week, the battery dies. Its not a bad battery, when i disconnect the wire and leave it, then try it works fine. Anyone know what the problem might be? Whats draining the sucker?

Edit: I just bought the car recently, so I don't know if the other owner had the problem or not (he prolly used it daily). Nothing is on...at least nothing noticable, lights, clock, cdplayer, whatever. No aftermarket anything.

Any ideas? Thank you.

I had a simular problem and it turned out to be the trunk light not turning off.