hi,
the suggested link is only for customers & partners (official support site)
blogs.msdn.com/.../application-test-toolset-for-microsoft-dynamics-nav-2009-sp1.aspx
...."I am sorry, PartnerSource is currently the place we put these kinds of tools"
www.microsoft.com/.../details.aspx
.....
BUT.... you are lucky in this case... you can download it from here !!.... (Microsoft deployments for Mibuso)
"Application Test Toolset for Dynamics NAV 2009 SP1"