When you install View Agent on the virtual desktop SSO is enabled by default.
Just follow the steps in the View 5.1 installation guide. You might also want to look at the Architecture Planning Guide.
All View 5.1 documentation is here http://pubs.vmware.com/view-51/index.jsp?topic=%2Fcom.vmware.ICbase%2FPDF%2Fic_pdf.html
Let us know if you have any specific questions on this when you come to set it up.
Mark.