Help Choosing Site Category

I just finished a web site for a client. The site is tradewindsaviation dot com. I a couple questions. First, can ANYONE other than the actual site owner submit a site (ie, myself as the site's web master). Second, is this the proper category for this site -

http://www.dmoz.com/Business/Transportation_and_Logistics/Aviation/Education_and_Training

I find it interesting that if this is the proper category, why wouldn't the site be found under regional/united_states/California ... etc. like most other "businesses" are? Thanks for any feedback.

Anyone can suggest a website.

Since that one offers local services, it's eligible for both a Topical and a Regional listing. Suggest it to both.