I have spent the last couple of days trying to figure out how to install this game unattended.
After searching the forums, I found one gentleman who used the /s swith in runonceex,
which I tried and did not have any success.
The installer appears to be Installshield, so I made made an iss file by installing the game.
My iss file contains the following:

[InstallShield Silent]
Version=v7.00
File=Response File
[File Transfer]
OverwrittenReadOnly=NoToAll
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-DlgOrder]
Dlg0={907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdWelcome-0
Count=6
Dlg1={907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdLicense2-0
Dlg2={907B4640-266B-4A21-92FB-CD1A86CD0F63}-AskText-0
Dlg3={907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdComponentDialogAdv-0
Dlg4={907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdSelectFolder-0
Dlg5={907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdFinish-0
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdWelcome-0]
Result=1
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdLicense2-0]
Result=1
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-AskText-0]
szText=My serial number here
Result=1
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdComponentDialogAdv-0]
szDir=C:\Program Files\Atari\RollerCoaster TycoonŽ 3
US-type=string
US-count=1
US-0=US\New Auto RTPatch Client Installer 6.50 US
Component-type=string
Component-count=1
Component-0=US
Result=1
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdSelectFolder-0]
szFolder=Atari\RollerCoaster TycoonŽ 3
Result=1
[Application]
Name=RollerCoaster TycoonŽ 3
Version=1.00.000
Company=Atari
Lang=0009
[{907B4640-266B-4A21-92FB-CD1A86CD0F63}-SdFinish-0]
Result=1
bOpt1=0
bOpt2=0
[{B34454E6-1B17-4B6A-94F5-DAAF9F1ACE02}-DlgOrder]
Count=0


My batch file uses the following line:

start /wait %cdrom%\Games\RCT3\setup.exe /a /sms /s /f1%cdrom%\Games\RCT3\RCT.iss /f2%temp%\RCT3.log

The game begins installing then the Atari Registration comes up (ATR1.exe) which I end manually or it will hang, but the
install stops there as the batch also ends with the Atari Registration end.
How can I suppress this registration dialog? I clicked thru it when doing the iss install, so I don't get why it still
comes up.

Any and all ideas are welcome

D