Okay, here's some sites to starts you on your quest for the ultimate accoustic:

http://www.fender.com
http://www.gibson.com

(thats the two everyone knows)

http://www.takamine.com
http://www.crafterguitars.com
http://www.ovationguitars.com

and http://www.yamaha.com (just dont spell it with two m's like I did or you'll get another TOTALLY different site......lol)

There are many makes of accoustic guitars in the world and if you're a begginer its worth checking out as many as you can. Get some guitar player's magazines, they list loads in adds and reviews. And many do colums showing you how to play stuff. If you live in England try 'Guitarist' magazine....there's usually something in that for everyone.

And of course, this site here :) Make use of the many links from it too.