You installed Autodesk Inventor Tooling and when working with tooling you do not get the tooling ribbon in Windows Vista operating system
This is because during AIT installation you had User Account Control turned ON.
Turning UAC ON during installation may cause AIT tooling add in not install properly with Inventor and may not be listed under Tools, Addins.
Please make sure you do not have UAC turned ON during installation. This is recommend for any Autodesk Inventor products installation.
To turn OFF UAC, Open control panel, User Accounts , Turn User Account Control on or off, Uncheck "Use use account control (UAC) to help protect your computer" box.
If you have already installed AIT 2010, please uninstall and install again with UAC turned OFF.