okay..the thing is..ive been threatin by this guy, sayin hes goin to steal my IP address and mess my computer up..and the thing is..he has my ip..he showed it to me..i wanna know since he has it..if he really can mess my computer up and stuff...and if he can,..what can I do to stop it,change ips,or just do anything..to prevent this...he keeps threatin me n stuff....help me out please..thanks