I (finally) found some documentation today on how to redirect a dynamic URL to a static URL. For example changing www.example.com/page.php?article=22 to www.example.com/apples-and-oranges.php

This is your .htaccess file entry to do the above redirection, of course the RewriteEngine on command is only needed once before the first redirect… This will work for ONE variable pair

RewriteEngine on

RewriteCond %{QUERY_STRING} ^article=22$
RewriteRule ^page\.php$ http://www.example.com/apples-and-oranges.php? [R=301,L]

Now if you need to redirect a dynamic URL with more than one name/value pair like this:

www.example.com/page.php?widget=cellphone22&color=red

You will need to use the following code:

RewriteEngine on

RewriteCond %{QUERY_STRING} [&]?widget=cellphone22[&]?
RewriteRule ^page\.php$ www.example.com/cellphone22.php? [R=301,L]

In this last example, &color=22 is ignored.

Resources for this post:

http://www.webmasterworld.com/apache/3365089.htm

http://www.seoverflow.com/blog/seo/setting-up-301-redirects-for-dynamic-urls/