To clarify, you said you installed "vs 11 developer preview" - did you mean "vs 11 Beta"? If you are using the Windows 8 Consumer Preview, you need to install Visual Studio 11
Beta, not Developer Preview.
If you have the Beta installed, try running:
C:\Program Files\Microsoft Visual Studio 11.0\Common7\IDE\devenv /installvstemplates
When that is complete, do the templates show up in the New Project Dialog?
~Gearard