killabluey, skip step 6 and proceed with step 7.

File **.desktop doesn't exist at this point (step 6), but it's going to be created inside "/usr/share/applications/hildon/" with step 8 when you will execute command "desktopgen /home/user/Games/Sim3/appinfo.json". When **.desktop file is created once (and other 2 files mentioned in step 6) it doesn't need to be moved anywhere, because its already placed in right location (the same is with other 2 files).