For those having issues with win7 64 bit try downloading the 64 bit version of BOTH Eclipse and java and see if that cures your problems......
To set your PATH to where javaw.exe is located (Check your PC, it should be something like C>ProgramFiles>Java etc). Just add a link in the PATH variable which is located by clicking on Start then right click on Computer>Properties>Advanced System Settings>Environment Variables then in System Variables scroll down to PATH and Edit. Now add the PATH to the Javaw.exe to the end of the PATH (DO NOT OVERWRITE IT !!!!)
Hope this helps......
"Who's the more foolish: The fool, or the fool who follows him?"