While I'm installing the office program I get an error message as "The installation source for the product is not available". However there is the DVD in the Drive? What to do...

When you try to install a Microsoft Office program or run an Office program for the first time, you may receive an error message. This article lists common error messages that you may receive, and it contains step-by-step methods that may help you install and run an Office program.

For detailed information on how to solve this issue click the below Microsoft support page and follow the mentioned steps.
[url]
http://support.microsoft.com/kb/932857/en-us [/url]