Google Webmaster Tools find a lot of Not Found Pages
Hello,
Google Webmaster Tools reports a lot of 'Not found' pages (694).
As this is a problem for website SEO, i would like to clean the errors.
The problem is that i don't know how, so can anyone help me?
For example, one reported error is:
http://www.telecomhall.com/Data/Sites/1/skins/dcarter-turnitup/layout.Master
404 (Not found)
Linked from http://www.telecomhall.com/Data/Sites/1/skins/dcarter-turnitup/
How could i clean this errors?
Inserting some new line at Robots.txt?
Thanks in advance.