In the middle of some desperate, there is two way to use latest Delphi in Windows 7 64 bit. One that I have been tested is using Windows XP Mode. Second that I haven’t confirm is using Delphi Weaver aka Delphi 2010.
This is the screenshot of Delphi 2009 in XP Mode:
Picture 1. Delphi 2009 in Windows 7 64 bit using XP Mode.
Hopefully Embarcadero will release an update to fix this.