Software Deployment

Hi,
True, this problem might be more a post-install problem than an installation problem. However, I'm pretty desparate right now.

I'm installing Acrobat 6 Professional from a network share during a pre-login boot script (we're scripting in Perl). My command-line is
msiexec /i \\ss17\dist\adobe\acrobat\6\acro6pro\AcroPro.msi AdobeAcceptEULA=Yes EULA_ACCEPT=YES TRANSFORMS=\\ss17\dist\adobe\acrobat\6\acro6pro\AcroPro.mst /qn /le C:\srl\logs\acro6install.log
My serial number is in abcpy.ini. I'm also applying some post-install registry tweaks:

;Deactivate the registration request
[HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Adobe Acrobat\6.0\Registration]
"PRODREG"=dword:65686669

;Set the program auto-update feature to manual and disable the update reminder
[HKEY_LOCAL_MACHINE\Software\Adobe\Adobe Acrobat\6.0\Updater]
"bShowAutoUpdateConfDialog"=dword:00000000
"bShowNotifDialog"=dword:00000000
"iUpdateFrequency"=dword:00000000

;Deactivate the request to accept the license by the first program start
[HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Adobe Acrobat\6.0\AdobeViewer]
"EULA"=dword:00000001

So far, so good. The software installs fine for all users on the machine (I've got about 180 PCs to install on, running Win2k SP4. They're all in the same domain).

The problem is that sometime after the installation, "Adobe PDF" becomes the default printer even though our machines already had a default printer set (all machines have access to a network printer and/or one or more local printers, and different machines have different a different printer set as default). I can't figure out exactly when this is happening, nor do I know how to solve the problem. Since it's not happening exactly at the time of installation, I can't just dump the printer registry keys before the installation and merge them back in afterward to solve the problem.

I'm also afraid that this is not a problem I've seen documented anywhere except for one Usenet post (with no replies).

Many thanks for any advice.
Cheers,
Colin