installation problem in win98 system

Dear Professional, I have try to install Apache 1.3.22 and PHP 4.3.2 on my win98 system. First I have edit the "php.ini" file as doc_root ="c:\phpweb" //my folder where .php files will be placed. extension_dir = "c:\php4win" // php4win is my folder, where i have install my php and copy these two files in c:\windows directory. In Apache conf.httpd file I have make changes as DocumentRoot "C:/phpweb". But despite of all these changes, when I excess any my php files, php file not complile and code looks as they typed. Please help me, I will very thankful. Thank you, Imran