We need to create a cron job/app that will create/Update accounts for two different scripts .
All of the billing will be handled by whmcs script see link.
http://whmcs.com/
http://wiki.whmcs.com/API:Functions
Live drive . com has an api to do this. I will provide upon request
We will need to do the same for ct pages . com site
Create account based on product use the same user/pass as whmcs update exp date in other sites.
This should hopefully be easy.
Please do in PHp and make it secure.