Here is some information about Titles Descriptions and Keywords and why they are so important

When search engines scour the net to find relevancy, the Title is the most important piece of information. Make the title of each page similar to the home page, but with different keywords for each page so that search engines will point different users looking for different topics to the appropriate page of your site. The Title of your page should not be much longer than 10 words

The next important thing to add is a description. These should be different for each page. It is the best way to have people click on your link because it draws the person's attention towards it when the search engine results come up. Do a search for something on Google or Yahoo and notice the descriptions below the title for each result. Do they grab your attention? Do they make you want to select that page or does it look like confusing text? You will be most effective if the description is short, sweet, to the point and easily readable. The description for each page should be different, should include instances of your most important keywords and should be 1 to 2 sentences long.

Lastly, we need keywords. Choose the 3 best keywords and list them first, then add another 10-20 keywords that will be important, but less so than the top three. These top three keywords should be listed in the title and description as well. A keyword can actually be multiple words. Whatever is in between the commas is considered a keyword. Below is an example of three (just three) keywords.

Sprinkler, Sprinkler systems, West Michigan Sprinkler Systems

It is up to you to determine what keywords your customers might type in a search engine and make those your keywords. >>

This is an example (just an example) of what the home page Meta tags could be for your site

TITLE: RV World: West Michigan premier RV Sales and Service

DESCRIPTION: For over 20 years, West Michigan has relied on RV World for all of their RV sales and service needs. Fifth wheel, camper, trailer and truck bed campers too! When you're looking to buy a Recreational Vehicle, see why we are known for Service after the Sale!

KEYWORDS: RV, Recreational Vehicle, Michigan, West Michigan, Fifth Wheel, Camper, Trailer, Truck Bed Camper, Sales, Service, Coopersville, Muskegon, Grand Rapids, Ludington, Grand Haven, Rockwood, Lance, Sunnybrook, Nomad

I've put some keywords in bold so you can see the repetition.Your first 3 keywords are the most important and they should be repeated a couple times (not more than 3 times) in both the Title and Description. Naturally, we don't know what words you would use and the description in this case doesn't have a lot of flow, but remember, you want your top keywords in all three. Also, it might benefit your site to add different geographical areas and manufacturer's in the keywords so that if someone types "Michigan Rockwood RV" you would have a better chance coming up because Michigan is in all three (title, descrip, keywords) Rockwood is a keyword and RV is in all three.