virtual help

I'm looking for some help with excel spreadsheets and data entry. I have a product sheet that has 26,000 products and I'm going to add 25,000 more. My current sheet has a number of column data missing and incorrect, the VA needs to be able to manipulate excel sheets. I have at least 3 different sheets and or sources for retreiving information. I will provide ftp access info for uploading pictures. The person needs to use skype and can speak reasonable English.. An example would be. in a sheet with 12 different columns for E-commerce it may be missing the brand or upc code or description. The VA needs to copy and paste info from one sheet to the other. They may even be asked to go and type the sku in the manufacturers website and copy and paste required info. the person is expected to work 2 day on this task or 16 hours with expected 2 hours of instructions from me.