http proxy

Is there a system / language / CPAN module which lets me visit a specific series of CGI pages from a server-based browser? We do a lot of http proxy work where we'll run a process on our server which mimics a user's actions on a third-party website, but we've been doing this "manually", and it's getting to the point where we need to better script it. We'd need to maintain session cookies, session URL's, and so on, being able to submit the CGI data in the correct sequence (if the website has a series of forms). In short, we need to write less code and configure these things at a higher level. Thanks in advance!