script customization for file upload and MySql storage

I need Solmetra Flash Uploader ([login to view URL]) integrated into my website. I have a website where customers are paying me via Paypal Website Payments Standard and then uploading a large file. On my webpage that is the landing page for a successful PayPal payment, I need the page to 1) prefill the page with the Paypal transaction info that came back with the customer from the Paypal HTTP Get (customer name, customer email, payment, transaction id) 2) then call the Solmetra code to perform a file upload 3) store the file name on the server and then have the customer info from Paypal (from step 1) and the file name and full path stored in MySQL. HTML, Flash and Javascript components are in the browser and PHP is on the server. I need the uploaded file stored in a directory on the server that is not visible to the outside world. Solmetra's code handles most if not all of the possible error conditions including, I think, javascript or Flash 8 not being available on the customer's browser. The page should work in IE 6, IE 7, Firefox 2 and 3 and Safari. I don't think it makes a difference but the webpage where this script will live is a RapidWeaver page. I can take almost any HTML or script functions and plug them into the RapidWeaver built page. Thanks.