[bitshiffed]

It sounds like you're done messing with it; but if you're not, you can install it without the Android/Java stuff. If you let the installer start running, but deny it elevation to write to your system directories when prompted, it will throw up a "manual install" dialog with instructions and links to download the individual components separately.

Then you can download just the IDE, the Mono framework, and the Xamarin.Mac or Xamarin.iOS pieces if you want them.

[kalleboo]

You can also just go straight into the app menu and there's a "Show manual installation instructions" item there that pulls up the same dialog