[ic] Paying for a new Entry/ running PHP on Receipt page

[In The Sun, LLC]

Hey everyone
I have a dilemma!!  Here is what I am trying to do or at least want to do:

Sales rep creates new entry into company database.  BEFORE the information
can go "live" or activated on the site it must be paid for.
It looks like this:
Create -> Pay -> "Approved" ->Posted

Any suggestions on how to set this up through Interchange and using MySQL to
create the new entry?
The entry is not part of the "products" table.
Can the Interchange receipt page run a PHP "approved" script without
changing the extension (.html or .php)?

Thank you for any suggestions
M Dell