gcstang,
We do not have a dedicated 64 bit build yet (something that would run with the 64 bit build of Eclipse), however – the 32 bit version of MyEclipse will work fine on Windows 64. A dedicated 64 bit build is in the works, but not available at this time.
Could you please point out the post that stated it does not work on 64bit windows? I will post a correction immediately.