go to pingomatic.com and suscribe your feed. If you want more, suscribe at www.feedburner.com and activate the service for pings (they include pingomatic too).
The main things I would suggest using would be like most have suggested, sitemaps and Feedburner/pinging. I usually have my new posts in Google within ~15 minutes.
It should happen fast. Google already knew 3 days ago that my new Turf to Trees Forum is online, and I hadn't even submitted it until last night.
Several things can help your blog to get indexed quickly -set up your blog to ping every time you post -post frequently to encourage the googlebot to visit your blog often -join google sitmaps - get links (most important one)
the most trusted way is ... making a sitemap "xml" and submitting it to google your site will be crawled within 48hrs..
Get backlinks from a high PR, trusted site, and you'll be indexed very fast! (my personal record is 4.5 hrs. )