I don't seem to have any .tmp files in my DCCache folder, so I can't test this.
Can someone please tell me (so I can correct this if I need to), are the temp files named like this? File.tmp File2.tmp, etc? I would assume they are.
@echo off
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\CASPartCache.package"
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\scriptCache.package"
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\compositorCache.package"
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\simCompositorCache.package"
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\DCBackup\0*.package"
del "C:\Documents and Settings\My Computer\My Documents\Electronic Arts\The Sims 3\DCCache\*.tmp"
start /d "C:\Program Files\Electronic Arts\The Sims 3 Ambitions\Game\Bin" Sims3Launcher.exe