Excel Data Entry

I have a Microsoft Excel spreadsheet with about 1500 names and addresses, but no zip codes for those addresses. The person doing this data entry would simply go to [login to view URL] and input the address into the box to get the zip code. About 300 of the 1500 names do not have an address, but I have links for each one of them that gives you both the address, zip code, phone number, and contact person. For these 300, I need the data entry person to click on the links I provide and "cut and paste" the data into the proper columns on the Excel spreadsheet. I envision this task taking between 6-8 hours, depending on how fast you are. Thanks.