Photo editing

Hi. I need someone to edit product photo's to help make my items look professional. This will be ongoing work and products consist of giftware and jewellery. The main technique that I need is someone to be able to take my DSLR photo's and edit them to have the background pure white (with light shadow if possible), as well as resizing. To start with there will be between 200-300 photo's to edit, and then as new products arrive and new photo's are taken, these will be sent through as well. If possible, it would be great if the photo's already on my website could be touched up without the need to email them through. Please could you also let me know the approx. number of photo's per hour that you can edit. Thanks