im into building computers too but im 19 .. and i did it in my gifted prgram in school.. nothn really high tex got the tower and put shit in it and basically thats it hahah worked pretty nicely too..
one thing that im really into is the denamics of sound.. like i built a box for 2 kenwood 12's for my stratus =) had them perfectly fit for the car and flor the specs of the speaker so it hit like a champ.. custoom vinyled it and wired it all up for FREEE =) school payed for it since it was a class "assignment" haha

if neone on theses forums is still in jr high or highschool.. try to get in the gifter/impact program.. u can learn alot there =) its very usefull!!!