CGI problem

Hi! I am having trouble when i am programming CGI programs in C I can''t get they value of the form (on a page) into the CGI-program! (or the program does not read it) I have tried many ways...but..(you figure out the rest =) i have not succeded! anyone that has programmed some CGI-programs in C, and have used forms to get some values, how did you do? (this may be quite difficult to understand but if you did and know how to program CGI programs in C, i would be happy for an answere!) /Martin