Real dumb newbie question...

I'm totally new to this PHP thing... (and apache...) so I tried doing one of those tutoral thingies... I stuck stuck on some problem that is like this: I try to access the page on my own server (phpinfo.php) and for some reason instead of loading it on IE6.0 it tries to download it from my own harddrive... How do I prevent this? (It worked just fine before...) I can still load PHP pages from other sites on the net except the one I made... I tried deleting it and making a new PHP page but it still does the same thing... Any help is appreciated :))) (I'm on MSN Messenger too... Vivoant@attbi.com)