Need help selling myself for my dream job

I've been looking for months for a full time career where I can work from home. Just tonight I found a job that I think would be perfect for me. It's in a field I love and, although it does require a little travel, I could see myself retiring from this organization. The problem is I need help with my resume and cover letter. Can anyone recommend someone who can help me out? I have never used a service that helps with resumes and cover letters, but that's how big of a deal it is to me to stand out to this employer. Any help would be appreciated!