234801 oscommerce payment module

I need a payment module created for oscommerce to allow paypal payments to stay within our own site, but only appear as a payment module if the following conditions are met - 1. the price is below a pre-set amount. (which can be changed in the admin section). 2. the product description contains a year, and this year has to be 1953+ for this payment module to be enabled (it may also be nice to contain this in the admin section as well).