Bots will crawl URLs with ? in them. Many people claims that it's better to not have questionmarks in the URLs. Make a google search for 'mod rewrite' and you'll find some good solutions.
You should have know problems webmantx, once you have created your site just setup a xml sitemap for those page. The pages with ? is the same page when different data is called, usually ?ID=1 is just calling a row from the DB, but the page is always the same.