PHP Website Modifications

Hey all [login to view URL] has a klone script that we need modified. We use GuruScript Freelancer klone programmed in Smarty PHP I need the following mods done to it in PHP: 1) changes to the signup form so there is a special one for customers and a seperate one for providers the customer one will be straight forward, the provider one asks q's about services they can offer 2) I want the providers to be paid for their jobs once completed via PayPal, instead of it just paying us they can also have an option to state a deposit they want before they get started. (Like Milestone payment) then the rest is paid after the Provider marks the project as completed. 3) Most important mod is A Task system: Basically right now all you can do is post a 'PROJECT' and providers bid on the project. What im looking for is bidding on TASKS inside of the project. For example: lets say i need an ebook made for me ebook creation would be the project tasks would be: 1. Ebook Graphics 2. Content Writing 3. Sales Page so depending on a providers expertise, they will be bidding the task(s) inside the project that they can complete. The customer will need an intelligent way of managing the bid of these tasks. Once ALL tasks have been completed, then the project is then marked as completed as well. I am FULLY open to suggestions for this script, but I need an intelligent PHP coder who is a leader to step up to the plate to provide these. This will be the first of THREE versions, so whoever does a good job with this, will be hired for the rest. Winner preference will be selected to those that have worked on such a script before and can provide proof. LASTLY: Winner must have skype or msn to communicate daily on the progress. Thanks and good luck!