> it has like a calendar icon-image on it?

I'm not sure what the calendar thing is...
It should have the icon of an unassociated file and it should not have any extension.
For example, file name is:

hosts

NOT

hosts.sam

> I deleted that thing and still no success!
> (Well actually I placed it in the Recycle Bin, does that matter, or do I have to completey remove it from trhe system.

No.

meselfs himself!