Data Entry for excel spreadsheet of almost 600 rows(repost)

Hi, We have a spreadsheet with aproximately 20 columns. We need you to fill in each row with the correct data. These are consumer products so you would be going to the manufacturer site viewing the specifications then entering them. Its a simple process its just time consuming. We would like that you send us what you completed every day or few days(whatever is convenient, not including weekends) so we can import them daily rather and review your work rather then one lump some at the end. We will fill you in on the details if you are able to do this showing you the spreadsheet and explaining what goes in each column and its format. Before accepting we would like for you to do one row just so you are comfortable with the job and to confirm you did it correctly so we can have a smooth and quick process. *If you dont have excel we can save the file as text tab delimeted for you to work with and it will work universally between excel and whatever program you use.