Go to this site and about halfway down, under Calculating Frequencies, download the program they offer.
http://sound.westhost.com/project63.htm
In the Calculate R column, enter the frequency you want to allow through, then enter 1 for Gain, and 10 for Q. That will provide you with the values for the components in the schematic.
Repeat this using all four of your desired frequencies, then run off to Radio Shack to buy parts.
Another good page which explains this is here:
http://www.mathworks.com/academia/st..._problem1.html