296386 website post-purchase tasks

a. User clicks 'Purchase using PayPal' for an item on my site. When payment is confirmed by PayPal the transaction id and product id should be entered into the database. *Note: How do we know that it is a valid productId & not spoofed by a hacker? *Note2: How do we automatically add recurring hosting fees of $9.97 per month with the first month free b. User is then redrected to a form that they must fill out on my site User fills in the form with the following information: Full Name UserId (must not already exist in our database) Password Verify Password Payment Transaction ID (from paypal) Contact e-Mail Address Domain name to be registered (must not already exist in our database) *Note: Validate input so that only .com or .net domains are permitted. *Note2: All fields must be filled in c. System then performs the following actions: 1. Create a sub-reseller eNom account (I currently have a reseller account with eNom, not sure how to create a subReseller account) 2. Register a domain under my eNom account 3. Register two nameservers for that domain 4. Push the domain to the new sub-reseller account 5. Create a new client account with my cPanel Hosting Manager 6. FTP specific files to new account (hopefully PayPal information will contain item id what user purchased) 7. Give correct permissions to perl scripts (chmod 755) 8. Activate my autoresponder to send a series of messages to this new client *Note: the first message sent out should include user's name, account logon-id, password, domain-name. PS: Don't go crazy with your bid prices by picking number from the clouds like with my previous project. Also I will not consider bids from developers who post 'generic' messages that do not specifically mention this project. Regards, Sean K