Resource Tweaker is an extension for the CFF Explorer, which makes it possible for older resource editors such as Resource Hacker to edit PE64 files (you can edit all non-x86 PEs). Win32 resources haven't changed much (what changed are bitmaps, icons, cursors which can be edited with the CFF Explorer), although the PE format has. It doens't make much sense to reinvent the wheel, since, through this extension, you can keep using your favourite resource editor. This extension works 100%.
How does it work?
Install the extension, open a PE64 (or 32, you can use this extension even for PE32, even if it's useless) with the CFF Explorer, click on Resource Tweaker and then click on "Tweak". The resource editor you have chosen will be started and you will see the PE's resources. If you modify something, just click on "Save" in your resource editor and, after you closed the program, the CFF Explorer will apply all changes to the opened file. This extension work 100%. If any problem occurs, it means that the resource directory is encrypted/packed or similar.