Click on the New Page button
Name your page: Rate the Companies and click Create
Click on the Edit Page button and click on Insert-> Spreadsheet. Click on your Rate the Companies Spreadsheet and click on Select.
Your spreadsheet will be inserted onto the page (Once you hit Save)
Click on More-> Edit Site Layout
Click on Navigation under the Modules heading on your sidebar
Select Add Page and click on the Rate Your Companies page
Click Ok->Ok->Close