Whaddya apply for trademarks for your domain name?

I am wondering if I can apply for Trademarks for my "KING.NET" domain name. I am using KING.NET obviously as my main blog, to transact business in various ways from IT Consulting, Domain Name Management, Content Management System (CMS) management, Email Services, provide Howto Guide and other IT-related online services.

After reading this article I need to take time out and discuss it with local lawyers to help me file my trademark application for "KING.NET".

"Will the Domain Name Owner or Trademark Owner Win a Dispute?

Domain name owners frequently open their mail to find a letter from a law firm representing a trademark owner. These letters - called “cease and desist letters” by lawyers - demand that the domain name owner stop using the domain name, transfer the domain name to the trademark owner, and provide information about the dates of use and money made from the use of the domain name." (2009, Examiner.com)

I've checked the current owners of other extension for KING domain name. Here's the results as of this date.

King.net (Technology)

Owner -Hardworking.com

Registered Since - 1995-07-31

King.com (Gambling)

Owner - Midasplayer.com Ltd

Registered Since - 1994-02-44

King.org (King FM - Radio)

Owner - KING FM

Registered Since - 1995-09-20

King.info (Coming soon)

Owner - Jonas Duxen

Registered Since - 2002-07-13

King.biz (No website)

Owner - Anheuser-Busch, Inc.

Registered Since - 2002-03-27

King.us (Forwarding to emailmyname.com)

Owner - Hostmaster NOC

Registered Since - 2002-04-24

If you have someone to recommend in Virginia or Washington DC, please drop me a message. Preferably affordable service :) Thank you in advance.

Update: I am currently checking the trademark service offered in MyCorporation.com website.