Repair/modify a payment plugin on virtuemart/joomla

Hi, we need someone to: 1. modify an existing paypal plugin to generate the proper XML and communicate with payment server ( POST and CURL ) 2. generate a success/failure message accordingly. 3. Change "Please wait to be redirected to Paypal" to a custom message we need you to focus on generating the proper dynamic XML, not test the payment plugin. The plugin can run the transaction fine.