What is this errors to google webmasters tools?
How to fix?
Crawl errors
Issues Google encountered when crawling your site.
Web Mobile CHTML Mobile WML/XHTML
Show URLs: Not found ‎(2)‎
URL Detail Linked From Detected
http://mysite.com/USER/ProductCommand.php?Product=MultiMedia 404 (Not found) 1 pages Jun 10, 2011
http://mysite.com/suspended.page/ 404 (Not found) unavailable Jun 6, 2011
The error is saying that someone from a mobile device tried to access the 2 pages listed on your site, but those pages do not exist. In order to correct them, you need to find the pages those links are on and make the link point to a valid URL.
It is good to fix all the errors you can, but if they are on an external site it might be out of your control. If you only have a few errors for your site then I would not worry too much about it.