want smallest easiest megadrum circuit

[url][/url]please give a link of the schematic for megadrum using atmega8. Actually i need only 8 input...and only the pc usb connection. Please tell which parts i can omit here...plz give the minimum parts list and the smallest drum schemtic here...thankx in advance...
How much will the begineer kit for it cost me in india...?
I also wanted to no wheather can be any other way to connect piezos to the pc. ?..and other cheape or easier to make module...?
Plz reply soon
How much will the begineer kit for it cost me in india...?
I also wanted to no wheather can be any other way to connect piezos to the pc. ?..and other cheape or easier to make module...?
Plz reply soon