Need help using remote access key

Hi guys,

I have just brought a reseller account with cPanel and WHM and i need to know how to use the remote access key in WHM, i have little knowlege of WHM and cpanel and i was wondering if anyone knows any sort of script i need to use as i dont have time to create accounts, so o want them to automatically get created once a payment has been made via paypal, anyone have any ideas?

thanks