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what is w32/stanit virus

Created: 08 May 2008 • Updated: 02 Mar 2009
Hi guys,
If any one knows about w32/stanit virus,please explain how to remove without lose any data.
Note:Folders properties it is showing as 40 kb but data is more than that when i tried to clean it is deleting folders.When i tried to make data CD it is showing 300 mb occupied but no files are folders visible.
Thanks for your support in advance.