Hi Frank,
For MS Office 2003 there are some decision points on using the Local Install Source (LIS) \MSOCache. With 2003 if you used a Custom
Installation Wizard file (.MST) applied to an Office Admin Installation Point then the LIS option is not available to you, but the
Office 2003 Admin Intallation Point should still be available to users in lieu of the CD. If you used a compressed CD Image you can
use the LIS and you should be able to download the LISTool to be able to create or repair an LIS.
http://office.microsoft.com/en-us/assistance/HA011402031033.aspx
For Office 2007 all users get the \MSOCache (no longer an optional feature) Local Installation Source install.
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Is it possible to install the Office 2003 installer files after-the-fact?
I did not choose to install the files while setting up the Office install with the Office Resource Kit Custom Installation Wizard.
Of course, now some Office patches are requiring the CD for the programs to work or the patch is not installing.
Thanks for any suggestions.>>
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I hope this helped you,
Bob Buckland ?

MS Office system products MVP
LINKS to the 2007 Office System
1. Free MS Office 2007 book from MS Press, 213 pages:
http://microsoft.com/learning/office2007/default.mspx#booksfrommspress
2.. Office 2007 Beta 2 Online Test Drive, Downloadable beta,
e-learning courses, doucmentation and movies:
http://microsoft.com/office/preview
3. Send 2007 Office System Beta 2 feedback directly to the MS Office 2007 product team with this feedback tool:
http://sas.office.microsoft.com/
4. Try the 2007 OfficeOnline preview website , without Office2007
a. Install the ActiveX access control
http://office.microsoft.com/search/redir.aspx?AssetID=XT101650581033
b. then visit
http://officebeta.iponet.net