Mike Southby

According to the system requirements, the x64 version of Windows 7 is not supported in CS3 but as always, there is a work around!

1. Run cmd.exe with administrator privileges (Start > type ‘cmd’ then right click on cmd.exe and select Run as Administrator, then click Continue when prompted by the elevation consent dialogue box).  This will open a command prompt in c:windowssystem32
2. Type cd..SysWOW64
3. Type regsvr32 jscript.dll
4. Type regsvr32 vbscript.dll

That should work; you can now run the installer.

The problem is that the Photoshop installer is a 32-bit program, which means that it needs access to all 32-bit DLL’s and COM registrations.  Strangely, the 64-bit DLLs on x64 Windows are in the system32 directory and the 32-bit DLLs are in the SysWOW64 directory.

WoW64 means ‘Windows on 64-bit Windows’ and it contains all the 32-bit binary files required for compatibility.

Let me know if this helps anybody.