Oscommerce feature enhancement and contribution installation/customization

Hi to you all, I would like a professional to do the following on my site. 1. I would like to be able to export all my items(products) to an excel file, be able to edit and update them in excel and then re-insert them back into the system. This is very handy for me in changing prices, product names, models and product description in a fast and easy way. Would ideally like to be able to export and insert the excel file via the oscommerce admin console and the whole process must be documented and very well explained to me. 2. I would like a watermark tool to place a watermark on all the products images, where the watermark can either be my logo or text. 3. Would like to be able to modify a customers orders, there is a contribution for this. 4. Would like to have scrolling text ontop of the menu, which i can choose what text and when to show on the site from the admin console 5. Gift certificate contribution - I have seen many, but would like suggestions as to which one is the best to install 6. I would like to enhance the whos online feature in the admin console, i had seen a contribution that add the users ip address to the order. I would like to see the mac address too and be able to export and see a history of people online so i can create my own reports. Any suggestions for feature enhancements to make the who's online feature of the oscommerce admin console better are welcome, please submit your sugestion together with your quote. 7. Some graphic design work, essentially banners and logos but more details will be given to the winner. Please include a seperate price for this item as i will evaluate if this will be part of the project at a later stage. Very important: When you reply, please provide answers and suggestions as to how you will accomplish this project. If you need any clarifications please dont hezitate to ask, i prefer all communication to be messages and not via msn messenger. The winner will not necessarily be the cheapest nor the fastest. I am looking for a quality job, and there will be lots more work for the winner who prooves that they are top notch programmers and are very professional. Thanks and good luck Harris