Add More Name / Addresses into Xcel Spreadsheet

I have? an XCel spreadsheet with name, company and addresses.? ? I have another set of sheets with name, company & some addresses. What needs to be done is: 1.? Create a new XCel spreadsheet from the data from the second set of sheets following the format of the first set of sheets. 2.? ? If the name is already on the first spread sheet, then, ignore it.? 3.? Otherwise, add it to the 2nd spreadsheet.? If there is partial information,? you may need to? find the company street address, etc.? I have a way for you to do? it.