php file extensions with IIS

I installed PHP 4.0 on an MS Windows 2000 server (running IIS 5.0). It processes files whose extension is ".php" but displays files with ".php3" and ".php4" extensions as text. I might have specified such behavior in the original installation. But now I can't find out where to associate other extensions with the PHP engine. Mainly I want to install the phpMyAdmin package to get started with MySQL (and get rid of MS Access :), but all the PHP files in that package are named with ".php3" or ".php4" extensions. By the way, I've been using Linux exclusively for the last few years, so I'm not too Windows savvy. But I'm working at an internship where everything is Windows-based, so I'm a bit lost (but feeling more at home by using great open source packages like PHP and MySQL :) Thanks! Matt -- Matt Garman, garman@uiuc.edu "I'll tip my hat to the new constitution, Take a bow for the new revolution Smile and grin at the change all around, Pick up my guitar and play Just like yesterday, Then I'll get on my knees and pray..." -- Pete Townshend/The Who, "Won't Get Fooled Again"