I own a boxing website, BoxSch.com. This site is a Boxing Schedule database that includes boxing records etc… I’ve only been live for 10 months. I receive 50,000 people a month. I have the top rankings on Y&G for “Boxing Schedule” “Boxing Schedule 2007”, “Pro Boxing Schedule” and many other keywords. I just brought proboxingschedule.com . I would like to permanently change my domain from boxsch.com to proboxingschedule.com. However I don’t want to lose my ranking.

I’ve be doing a lot of research on 301 redirect and mod-rewrite. I cannot find a step by step tutorial on how to implement this.

Some questions:
Do I change my domain with my hosting company then redirect old to new? Or do I set up the new domain as a new website and redirect the old to new?

Is it worth it? I already have top ranking, I’ve just doing this for re-branding.

Do I risk losing my rankings altogether or just for a short period of time?

Thanks for your time