Your question is not very clear. The preceeding comments are acurate, but I'm not sure they answer your question.
If you mean "How can a CGI program send data to another CGI program" there are a couple of ways. I think the solution you are looking for is to simply point the HTML page to the second script - this is assuming that you are trying ot run a CGI from a different server. This is probably a no-no however, simply because the original author could change that program, and your HTML page would send him/her bad data - which might actually do something.