Most zipscipts use the OnUploadComplete event, which is triggered when a file has completed uploading.
There are 3 args passed to it, Real-Path CRC-of-File VirtualPath.
INI Entry:
OnUploadComplete = EXEC ..\scripts\blah.exe
Args:
blah.exe "c:\site\freeware\setup.exe" 1A2B3C4D "/freeware/setup.exe"
Btw, from what i've heard your zs for raiden was the best available.