mod_rewrite is not part of php its part of apache. So yes you can use mod_rewrite and suphp together.
bvierra, I have seen a few of your posts and starting to like you! :D
(Mainly because I can step back and keep from slapping users upside the head! LOL)
Anyway, as bvierra pointed out already, mod_rewrite has ABSOLUTELY NOTHING to do with PHP and subsequently SuPHP!
Those are two totally separate and distinctly different things!
Yes, you can have SuPHP for you PHP and use Mod_ReWrite directives assuming you have both SuPHP and Mod_ReWrite installed on your server!
Yes, you can use phpinfo() in SuPHP as long as you don't put it in "disable_functions" list in your PHP.INI.
