You should use POST as method and the correct url is /process.php
Then add the parameters as POST variables.
Try to read an http protocol tutorial to understand how to do it
http://www.jmarshall.com/easy/http/#othermethods
EDIT:
You need to edit you HTTP REQUEST (POST blahblah HTTP/1.0^nHost: blabla^n^nvariable=dasd&variable2=value2^n^n)
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