Is there any difference with static and dinamic pages?

[Yahook]

I talking about the urls like this:
1) index.html
2) index.php?cat=1&site=4 for example
The content are static on each pages but the urls in the second case is dinamic.

[Stazz]

As for me, static urls like page.html or /page/ using mod_rewrite is preferable for search engines and they index them faster than page.php?blablabla