We currently have a script from contus for groupon script. Our store uses a currency which is not the standard paypal accepted currency, therefore we need to overwrite the paypal module so that on check out if customer chooses paypal, the amount is converted to us dollars before sent to paypal.
The script also has modified some features in magento, so the shopping cart rules / coupon codes are currently disabled, as it is replaced by refer a friend scheme.
I would like to revert this back to allow shopping cart coupon codes.
Please only bid, if you have similar experience with magento, and are a programming guru. I do not have much time to waste with this.