I'm in Denver too.. there's a few of us on these boards that live in the area. Not sure if you're an AA type of guy, but I know there's a few really big well established downtown area meetings. I don't attend myself, but I know when I was first sober a few people recommended them. McGowdog (are you reading this Mc?), knows a lot about AA in Denver, so you might hit him up for meeting reviews
Otherwise, welcome! Hope you're staying warm.. it's 0 degrees out there right now. I just wanted to say hello, and wish you the best. PM me anytime if you want to talk to a 'local' who's sober!