For the Integrated DxDesigner-Expedition flow there is a sample central library at $SDD_HOME\standard\examples\SampleLib2007. It is a small but functional library.
For the PADS flow there are some in the install: $SDD_HOME\Libraries: analog, common and discretes. There is also a download called DxDesigner Libraries that contains several libraries filled with sample symbols.
Is there any way to download files as i am getting error like
You may not access this page.
Do you have a SupportNet login? The link in the above post is for files that are on Supportnet which require a login, and therefore a Support Contract.
Yes i have the SupportNet login. still couldn't download
Do you have a guest login? That error sounds like the one you would get with a guest account. If you have a current support contract give Customer Support a call and open an SR. Someone can help you.