I am running Windows Vista and have an error in my Android application which is presented by Eclipse as:
The container \'Android Dependencies\' references no
the Android SDK manager (it's an application you can run by itself, Eclipse is only framing it) is itself located in the tools directory (clarification: I looked on the linux version, but would guess it's the same on windows).
You could try to copy it elsewhere and run that, or manually download and unzip the tools package, but it might be simplest to just re-install the latest SDK from scratch.