Directory Data Entry from Google Searching

We need 2,500 entries into a directory database. It involves: 1) Looking up businesses in a geographic area (focus on health care) 2) Entering the information into our online directory (name, address, phone, website, email.) Basically this is a cut and paste job. Please submit bid as a $ per 500 entries. There are probably 35,000 possible entries. So, if cost effective, we'll send you more. It is a Joomla 1.5 website running SOBI2 directory component. Multiple people can be adding at the same time. So the more individuals adding, the better. Timeframe is critical - we need these done in a week.