Consider the courses at sites such as Instruction Set, Hungry Minds , and SmartPlanet . Work on building a portfolio. As you are learning, work on a project for the Web, preferably one others might be interested in viewing. Build a resource on trail rides for your area. Even better, look for a non-profit and build a site for the organization to showcase your skills.
Companies take such efforts seriously.
You need to demonstrate not just your Web skills, but your ability to work on a team. Look for experience, anywhere you can get it. Once you're confident about your skills, look for freelance work, even if the pay isn't exactly what you'd like. Based on that, I was able to get a full-time job. Don't think you'll land the perfect job on your first try.