Integrate Shopping Cart, connect online store purchases with the creation of Moodle accounts, customize order confirmation e-mails

I am looking for someone to finalize a number of tasks that need to be completed before I launch my website. As of now I have the website design almost 100% complete (see [login to view URL]). There are a few revisions that need to be made but those are minor details, and at this point is not what I am worried about. What I really need at this point are a few things: first, a shopping cart integration with my website. As of now my website links to osCommerce ([login to view URL]; my domain is with GoDaddy), but what I would really like is to have users be able to make a purchase directly off of my website and not have to \"jump\" to a separate site, which is what I have now with osCommerce; I want something that looks more \"clean.\" I\\\'m not necessarily opposed to using osCommerce, but I do not know if it can be fully integrated into my website, or if it is more of a stand-alone type of store. I am willing to look into other options besides osCommerce, but I do need the online store to be able to accept both PayPal and Dwolla. In addition, I\\\'d like the flexibility to charge two separate prices depending on whether a user pays through PayPal or Dwolla, and I\\\'d like users to have to select some sort of checkbox that says \"I agree to the Terms of Use, Privacy Policy, etc...\" before they make a purchase. The second big task that is left is the automation of an account being created for a user in Moodle once they make a purchase through my online store (see [login to view URL]). As of now I have version 1.9 (for Moodle) as that was the most up-to-date version that GoDaddy had available. I have five separate courses that I am offering in Moodle (and those are my five products on my website), so I need some type of \"hook\" that would connect a user\\\'s purchase to becoming automatically enrolled in the course. I don\\\'t know if an external database is the best way to go or if there is a different way in which this can be accomplished. As of now I also have enrollment keys to get into each course, so users would also need to be given that information somehow as well (either through a customized e-mail that is sent once they purchase the product or via some other method). \r\n\r\nAs of now those are the 2-3 obstacles that I am facing and need help with. There may be a few other minor things along the way but I don\\\'t think they would take much time at all, and I would be willing to negotiate the price for those things as well (if that time comes) if it was necessary to do so. I am launching my website on March 1st, so I need everything to be 100% functional by then, but the sooner the better (it would be nice to have a few extra days to do some testing on my own before launching the site).\r\n\r\nI think that is about it...I am not necessarily constrained to the budget I selected but since a lot of work has already been completed I figured that this would be more of a \"simple project,\" but maybe I am wrong.