Definitely start a blog, that should be your number one priority - get out there and do it today! Blogger, WordPress, and LiveJournal are great places to start a blog for free.
Find online gaming magazines and scrutinize their front page for a 'Write For Us' or 'Writers' Guidelines' link. Most reputable 'zines will have a page specifically for this purpose. Follow what they say. The worst thing you can do is be a rebel; it just makes you look unprofessional and uncaring, not to mention disrespectful.
Many magazines, both in print and online, offer positions of a 'work from home' nature. The problem with this is they are generally contract positions, or freelance work, both of which can be unstable. Staff positions are rarely acquired without being able to work in the office on a daily basis.
What's the chance of you getting a job? You determine that. If you're passionate and driven and have some talent to back it up, your chances are very good.
Hope this helps!