EDIT: The latest installer works fine.
EDIT (2009-10-27): A way better solution is to use the x64 package of gVim from http://code.google.com/p/vim-win3264/. I say it’s way better because it adds diff with vim to the context menu when selecting 2 files, something I use really often. There is surely a way to add this one to the context menu using regedit, but I didn’t search for it.
After installing GVim on Windows 7 x64, we don’t get the useful edit with vim in the context menu.
Hack with registry:
Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\*\shell\Edit with Vim] [HKEY_CLASSES_ROOT\*\shell\Edit with Vim\command] @="C:\\Program Files (x86)\\Vim\\vim72\\gvim.exe \"%1\""