$HTTP_POST_VARS help!

Hello, I'm a newbie here, and hopefully, this won't sound too stupid. I've looked just about everywhere for how to do this, but haven't come up with anything. My goal is to do the following: 1. Have user fill out a standard form (that gets posted to a second php page) 2. Have the second php page modify some of the information in $HTTP_POST_VARS 3. Have this second page redistribute the modified HTTP_POST_VARS to many html files I guess it would help if I knew the following: 1. Is it possible to manually write into HTTP_POST_VARS and expect consistent results? 2. Is it possible to have a php page automatically Submit these (ie, user doesn't have to press submit button)? 3. Is it possible to submit these variables and _not_ actually have the browser switch to the "receiving" page? The idea is that I need to reformat the Posted variables and redistribute them to various html pages (each one of which expects different variable names -- hence the need to modify the keys in HTTP_POST_VARS), but the user should only enter their information once. Any help appreciated! Martin