"No input file specified." error.

Hello people. I got a little problem here, and I already searched on Google for possible solutions, but I still can't figure how to fix it. I'm developing a CMS Application on PHP. On my dev machine I'm running Apache 1.3.33 + PHP 4.3.9 as a module, and on my production machine i'm running Apache 1.3.33 + PHP 4.3.9 as CGI. Generally, I pass parameters to my scripts using this scheme: http://mydomain.com/index.php/var1/var2/var3 This works perfectly on my dev machine, but when I upload the script to the production machine, I get the error "No input file specified." if I try to pass any parameter in the URL. But if I call the script without paramaters, it simply works perfectly. On Google I found that the problem is related to the CGI behavior of PHP on my production machine, but I still can't figure out to fix it. I hope you can help me with this... and sorry for my bad english. Thank you very much in advance.