Quote - (needhelpcanhelp @ May 23 2007, 13:25)

I think a javascript problem is the cause in a lot of these cases. I would never have known if I hadnt went nosing
around in the Common Files/Adobe folder and stumbled across a log file names "Adobe Dreamweaver CS3 9.0.log.gz"
and noticed the install was halting with a javascript error. I googled the error and got the solution. I take no credit for this fix, though being quite a N00B in the department of diagnosing software and not being one for looking through log files I was quite
chuffed with myself for getting to the root cause. Anyway enough patting myself on the back, if not for others the info
would have been useless.
I tried almost all of the suggestions here to get the dreamweaver cs3 trial installed and nothing worked.
I am using vista 32 Ultimate but the vista 64 solution is a little different, both solutions are here, or potential solutions,
and really easy to implement. It will take longer to read my waffle than actually do the fix, so its worth trying,
especially if your install just starts a progress bar that promptly disappears.
Id try it if any installer of any software is failing. This fix is for almost every type of installer in VISTA.
For VISTA32 users>>>>>
Get command prompt up. It has to be run with admin rights so save yourself some time and run it this way.........Start/programs/accessories/.....right click command prompt and click run as administrator.
Then paste these commands in 1 after the other
regsvr32 vbscript.dll (THEN PRESS ENTER)
and
regsvr32 jscript.dll (AGAIN PRESS ENTER)
You should get a succesful response each time.
If youve recently tried installing the software it might still be running in the background (or more like hanging in the background), possibly more than one instance, you have to close any of these installers down in the task manager.
Open task manager and look at processes from all users, find msiexec.exe, its described as "windows installer" and close
all instances of this process.
Now go to your extracted program and run the setup file for your program (Im assuming your initial file unzipped or extracted
the files to a directory first), mine extracted to D:\Adobe CS3\Dreamweaver (D: is my primary drive, yours is probably C:).
I opted to right click my "setup.exe" file that was in the Dreamweaver folder and run as admin (just in case of admin errors) and the installer worked like a charm, no reboot required nothing. It was a doddle. IT WAS FIXED!!!!!!!!!!!!!!!!!!!!!
For VISTA64 users>>>>>After right clicking and running command prompt as admin, change the directory in the command prompt to Windows\SysWow64. Do this by typing "cd C:\Windows\SysWow64" in the command prompt window (dont type the quotes) and hit enter (Change the C: for whatever letter holds the Windows folder, your system drive!).....then type the
regsvr32 vbscript.dll (PRESS ENTER)
and
regsvr32 jscript.dll (PRESS ENTER)
Then follow the remaining instructions as vista32, which is basically to make sure the windows installer isnt running and run the set up file for the software as admin. BINGO...........I hope
Hope this helps. Ive heard it worked for lots of people. IT DID FOR ME.
I registered to post this specific fix that worked for me after seeing so many helpful people trying to help everyone sort there problem out, so I hope this helps even 1 person.
I can't thank you enough needhelpcanhelp!!
I installed Dreamweaver CS3 on my PC (Win32 Vista Home) in a breeze, no issues at all. Unfortunately, my friend's PC (also Win32 Vista Home) was another story. The Dreamweaver CS3 install would get to initializing then the window would just disappear. I spent all day trying different 'solutions' I came across (thank you Google). I finally got this to work using the above solution. This worked with UAC off, under a new user account, the installer was executed from C:\Adobe CS3\Dreamweaver.
Thanks again!