HTML Markup Validation Service Errors

[dereksdomain]

Hi!

I wanted too know if anyone can help me with. I have a lot of html errors on my website that I need to fix, and when I run it by here:http://validator.w3.org/check?uri=ht...alidator%2F1.1, I have 205 errors!

Now scrolling down a little more this is the first thing that pops up:

"Line 144, Column 22: ID "featured" already defined"

I want to fix all these programs. Now I don't have a program that tells me which "Lines" the problems are at. The only thing I use to adjust my HTML codes is the WordPress editor(doesn't support the "Line" numbers). If there any good programs out there that are good HTML Editors, clear, and easy to use? My web browser is also FireFox just to let you know. Any help would be appreciated.