Click on the "Survey" tab in the account menu. Locate the survey from the list and using the drop down menu select "Preview Survey" and click go.
After previewing the survey click the "Select Contacts" button at the bottom of the page.
The next page will bring will show the account contact list, select who will receive this survey. Use the search fields to locate contacts, check the box for the contact name to add them as a recipient. After the contacts have been selected click "Send Survey Invitations" at the bottom of the page to send the requests.