PayPal IPN in OSC integrated on Goddaddy's Proxy

I need assistance finalizing the installation of my PayPal IPN module in my Oscommerce website hosted on Godaddy using their proxy server an cURL to access their proxy:3128. Everything except the IPN post-back is working right now and I have a PayPal sandbox set up. I have a 3 year old heavily modified Oscommerce site that was operating fine on dot5hosting until their sql servers got so slow I had to move. I chose godaddy for whatever reason and FTP'd my site right on to the root. I've had a few issues configuring the cache, sessions and cookies (these issues may be the root of this IPN problem?); I used to use file based sessions on my old server but now have to use sql based session or the site gets all messed up, sometimes even showing data from other websites; I understand this is an issue of a .../tmp folder in the root of a shared server. My web site runs quick and clean from the browser and orders are passed to paypal and accepted, although the post back fails when it hits my [login to view URL] file. My one remaining issue is that I cannot get the return IPN from PayPal to make the secure proxy connetion with my IPN file on Godaddy. I have tried several versions of the oscommerce paypal IPN and currently have the latest OSC IPN v2.3.3 installed which has the cURL proxy:3128 implemented. On a side note, in my testing I have received 2 successful postbacks and then without changing anything, it stopped working. I've tried about 50 times total in the sandbox. I have been working in PayPal's sandbox and of about 50 attempts, two have actually posted back to my site updating my admin panel, adjusting inventory, and sending the order emails as they are supposed to. I only know php from the last 3 years of "on the job training" so I have a basic understanding. I've done 100% of the work on my site to this point and now I'm looking for some one who readily understands osc, php, cURL, and can clean this up so that my IPN will correctly make the return secure connection from paypal to my server and process the orders. The IPN files are attached, you will see the cURL proxy line at about line 72 of [login to view URL] I have PHP4 and I believe it is sql4 as well.