Magento Programmer Needed

I need a Magento programmer/coder to make some changes to the basic Magento functionality. I wish to use the Magento software to create affiliate websites and to import CSV files from affiliate programmes. In order to do this I need to change the following functionality, 1. Instead of dealing with uploading locally hosted images via the backend admin, I need the ability to specify an image located at a remote URL during the CSV import process. I notice that there is already an image attribute in the standard CSV format, but currently I don't seem to be able to specify an image hosted elsewhere. 2. Secondly, instead of a buy button on the product page sending a shopper to the shopping cart, the buy button should now link to the prouct page on the affiliate site. This link variable can be defined as an attribute and uploaded in the products CSV file. Any questions please let me know.