Upgrade Oscommerce Online Store from 2.2 to 2.3.3.4 - Repost -- 2

Hello, I currently have an Oscommerce website that is at MS2.2 - what I need is to update my OLD data base and bring it up to 2.3.3.4 standards. This means that you would have to have extensive knowledge in Oscommerce and in PHP to do this task. In doing this task I would need to have all current info (customers, orders, products, add ons etc..) from the old data base to be incorporated into this new data base. I have to make sure that once the site is upgraded that everything will run and that it will function properly. I do understand that some things (such as my add-ons) might need to be updated ... by you being the expert you will have to advise me as I am hopeful that with this upgrade that they will still work or just need some tweaking or small update to bring it current. The site is not heavily moded but it does have a few add-ons that I would still like to have incorporated into this new update, such as; Header Tags Controller PayPal IPN - Note: I know I will need this updated to current CCGV Credit Class Gift Voucher Dynamic Sitemap Wishlist Simple Master Password Social Bookmarks Shop by Price You will have a better idea when you look at the site to see how it is laid out and designed. I don't have a lot of funds to work with but whomever is willing to do the work I will want to trust to do more work for me in the future as I would like to have a few more add-ons added to my site... only serious people inquire please.