i am a student in africa and in our land, there actually exist slow and expensive internet connections, which is why we tremble in fear whenever we hear the word "online repository" method of installing software. Damn, that usually means you have to look elsewhere.
The problem.(i cant install android without connecting eclipse to the internet)
It is possible to manually download individual components as .zip files but there is no way of installing them into android eg i have managed to download
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webpage sudgesting solution that failed to work on windows seven ultimate
If someone has actually ever installed android without connecting eclipse to the internet, please let us know the magic you used. Thanks in advance :)
EDIT:
if someone out there is still interested check out http://qdevarena.blogspot.com/2010/05/download-android-sdk-standalone-for.html
and make sure your folder structure is as shown in http://developer.android.com/sdk/installing.html
For SDK and platform tools you can just extract the zip content, Eclipse has nothing to do here.
For Eclipse ADT plugin:
These steps are clearly explained in Eclipse ADT documentation.