At the top right corner you have a searchbox, try typing it there and see if it finds anything.
If it doesn't, select a text file in the new item dialog and change its extension to
resx
It should now open the new file with the resources designer. Now open the properties pane for that file (right click it in the solution explorer) and make sure it has the following set:
UPDATE: According to the link Chris posted, my suggestion won't help if you have the express edition of visual studio.