acctman

I currently have a pending trademark for one of my domains and I noticed that another site purchased my .net and .org (yeah i know stupid me, forgot to register). Anyway my sites be active and operating long before the .net and .org purchase by the other party and they're pretty much just redirecting to there own competing site... so should I just go ahead and get a lawyer to send out the cease & desist letter or can I do it myself since I have a pending trademark...?

thanks in advance