Need to change the Install Location of an InstallShield Program

I have an application that was created in InstallShiled, I need to run a silent install to several hundred machines.  I created an answer file, but sometime the /r switch doesn't capture the directory change, other times it does.  When it does capture the change, the setup will not run with that answer file (error code: -3).  If I delete the section where the change is then it will install, but to the default path which is not acceptable.

I downloaded AdminStudio 2011 and can open the executable, but when i change the INSTALLDIR under the general tab, and save as a different file name, the installer still puts in in the wrong place.

I need help either changing the executable or editing the .iss file so that the silent unattended install will work.  I'll up the points if you can help me add something in as well, but we will get to that after the first part is solved.  

Thanks!

Ed

My iss file as recorded by the setup
----------------------------------------------

[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-DlgOrder]
Dlg0={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-0
Count=16
Dlg1={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdWelcome-0
Dlg2={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdLicense2-0
Dlg3={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdAskDestPath-0
Dlg4={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-1
Dlg5={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-0
Dlg6={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-2
Dlg7={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit3-0
Dlg8={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-1
Dlg9={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit3-1
Dlg10={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit1-0
Dlg11={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-2
Dlg12={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-3
Dlg13={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-3
Dlg14={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-4
Dlg15={5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdFinish-0
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-0]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdWelcome-0]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdLicense2-0]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdAskDestPath-0]
szDir=D:\sysedge
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-1]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-0]
Result=0
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-2]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit3-0]
szEdit1=Server
szEdit2=IT Engineers
szEdit3=Server_Location
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-1]
Result=0
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit3-1]
szEdit1=Name
szEdit2=Name_2
szEdit3=SNMP_Trap1
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdShowDlgEdit1-0]
szEdit1=1691
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-2]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-AskYesNo-3]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-3]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-MessageBox-4]
Result=1
[{5AD4773B-84E0-479D-8519-E11C8EAFE85B}-SdFinish-0]
Result=1
bOpt1=0
bOpt2=0