customization to online store

Hello, I am using magento 1.7.I have a magento store in which I want different price for different customer group.I can able to add different price for different customer groups for each [login to view URL] I want three different price for each product say platinum price, gold price, silver price. And there should be a tab in the magento dashboard to assign different price group for different customer group from drop [login to view URL] when the customer from respective customer group login to our store they should get the price for each product depending upon the price group that we have selected from magento dashboard. And generate the report for the same to check to which group we have assigned what price e.g. platinum or silver etc. I need this to be done in 2 days