Data Post or Get Variable Undefined

Hi, In new version of php 4.2, I am trying to do post or get of data from html form to the php page. But it says undefined variable. Is there something different in new version for post and get. It do have increased security I have read but how can I do post and get. I have changed php INI file variable of cgi force redirect to 0 as PHP was not working for me on other values. But now cannot do post and get. Have read online help but couldnt figure out so please help. How can I do post and get in php new installers. OS : Windows Statbat();