Installation issue on Win2K and IIS 5.

Hello all, I'm completely new at this. I downloaded three files from php.net site: 1) php-4.0.4pl1.tar 2) php-4.0.4pl1-Win32 3) php404pl1-installer First, I tried installing the # 2 file, and manually adding everything. Did not succeed. (Let me clarify what I mean by not succeeding: when I'm opening a .php in my browser, it prompts me to associate with an application, and I tried associating with IE/php.exe - examples in the documentation do not work, even the very simple ones). Then I tried the option # 3, and it appeared to do everything for me (e.g., installation, IIS update, etc.), but I'm still having the aforementioned problem. I'm guessing this is something fairly simple, and I would greatly appreciate any help. Sincerely, Alex