URGENT Custom Oscommerce Work

Thanks for looking at this project. I NEED A VERY VERY QUICK TURNAROUND ON THIS - IDEALLY TODAY AFTER BEING LET DOWN BY A VERY INCOMPETENT SERVICE PROVIDER ON HERE. Please let me know when you can start aswell as when you can complete it. OK, Fairly straight forward job if you know what you are doing. Mainly requires installing a couple contributions and getting them to work with each other. I need someone who knows what they are doing as I cannot afford any mistakes. Also need to work quite fast on this. Payment is by Paypal on completion of the work - once I have checked it is working. Guarantee of more work if you do a good, fast job on this. [login to view URL] to cart notification ie. popup javascript box - alert when a customer adds a product to their shopping cart. [login to view URL] Without Account - Integrate it with SPPC (Seperate Pricing Per Customer) - 80% setup, but requires some integration with SPPC on the Catalog side - might just be [login to view URL] that needs finishing. [login to view URL] Shipping Prices (Per Item) - because I have SPPC installed, retail customers will use the individual prices but 'Trade' customers will have a flat rate of £8.50 (please see next paragraph) [login to view URL] Pricing Per Customer - Select individual shipping method for individual customers (in admin) not working - all shipping options are still showing during the checkout process. I need to be able to select ONE shipping method for my 'Trade' customers - this will be a flat rate of £8.50. [login to view URL] Cross Sell Contribution Many Thanks, Peter