You want to know what I do to people that steal shit to me; or that are stonger than me. I prank call them at 3:00 in the morning using the crank yankers site and NEXTELs site. Then, if they continue to fuck with me, I slash their tires/bring a bat if they want to fight.
Or you can just call the police and get him in deep shit..
BUT DONT BREAK INTO HIS HOUSE, thats stupid as hell. Trust me, you will get breaking and entering and go to juive... and you wont have a job for a long time...