MSI Default Install Location Question

Hi,
I'm trying to modify the default location that 'server.msi' uses for installation. Server.msi is the Front End server installation component of OCS 2007, and the path it defaults to is 'C:\Program Files\Microsoft Office Communications Server 2007 R2\Server\'. I want to change this to 'D:\Program Files\Microsoft Office Communications Server 2007 R2\Server\' (just a drive letter change), because I'm preparing an automated OCS server deployment via Altiris.

I'm not a packager by any means, but I've tried using Orca and WinInstallLE and from my uneducated view, it seems that TARGETDIR is the value to change within the MSI, but I have tried using 'D:\' and also '[WIPROPDriveD]' (as this appears to be what WinInsallLE uses when I change a drive letter). Neither work though, and when I run them I get a '2704' error from the MSI.

I reckon this is probably a very straightforward question for someone with packaging experience, but unfortunately I'm an infrastructure person, so in all honesty, I don't have a clue what I'm doing, even after having googled it for a while, so any help would be appreciated.
tbennett35Asked:
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Vadim RappCommented:
If Altiris deployment allows specifying command line, then specify parameter TARGETDIR=<your directory>

That is
msiexec.exe /i server.msi TARGETDIR="D:\Program Files\Microsoft Office Communications Server 2007 R2\Server\ "
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tbennett35Author Commented:
That didn't work, however what does work is to specify INSTALLDIR=<Your Directory Path>. This seems to work for any MSI that would otherwise allow manipulation of the install directory via the GUI install.
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