Data entry for Sigsiu Joomla Component

I need a few things done to a Joomla site. 1. (2) Excel spreadsheet of items entered into the data base for the Sigsiu Component, around 500 items, also I will need to know how to import new data for updates. I have added the Sigsiu plugin for importing and exporting if that helps. 2. drop down menu added to main menu under "products" 3. need the (login for price) taken off for the retail side, but it stays on for the wholesale, these are in two separate directories. 4. need an icon added beside the (click for details) words in the products area Website is [login to view URL], the max payment is $100.