4images php script

Hi, We need a cript that will automaticaly update data in an MySql database, each time a costumer performs a micropayment sending a SMS. The script we use is 4images ([login to view URL]) and the processor for micropayments is Sepomo ([login to view URL]). Sepomo already have an API for their costumers, attached is the Sepomo API documentation for evaluation. What do we need?? Step 1. Each time a payment is made, the API should comunicate with our site and try to find a costumer. If one costumer is found, jump to step 2, if no costumer is found, send an email to our webmaster informing that a payment was made, but there isnt this costumer in our database... Step 2. Update two field in our database. The firs is the dwonload limit for these costumer. The second is the time the costumer may use this new download limit (for example one week). Step 3. Send an email to our costumer, informing that download limits were upgraded for xx days. Step 4. implement a cron job that will check for each 12 hours if some costumers overpassed the free downloads period, and reverse the database entries to the original state, after the xxx days. Links: [login to view URL] [login to view URL]