Are you still having these problems? The most recent version of DS-5 is v5.13 -- I don't know if it addresses the problems you're having, but it is probably a better place to start from.The DS-5 instructions are referring to the Windows PATH. DS-5 doesn't install or rely on Cygwin. If you've installed it and it is influencing Eclipse then it may be necessarily to ensure things about it's path, too.What messages/errors are you getting?Are you trying to use a real Android target or a virtual one?