Adwords Keyword Conversions help [2nd attempt]

Hello, I'm looking for an expert who can configure correct conversion tracking for my Google Adwords\Google Analytics. English\Russian - Ok. Currently, GA is up and running OK, and GAdwords are working. Still I have a number of problems. The issues I ask you to solve: 1. Please come up with best options as for the exact technology within GAnalytics for tracking (goals? ecommerce? etc.) 2. I need separate tracking for 2 types of transactions: a) demo download. b) purchase made via our 2 Payment processors (Bluesnap [ex. Plimus] and PayProGlobal). c) all ecommerce statistics working. I will provide access to Google Analytics and Google adwords, and the website on your request. The job: 1. "Suggest best options for tracking downloads and purchases". 2. "Configure javascript and Google Adwords in such a way that for each conversion (order) it will show the keyword that triggered it." 3. "Configure Ecommerce stats". 4. Cooperate closely with me via Skype - good English\Russian. Feel free to ask any additional questions! website page + order buttons: [login to view URL]