It will be very difficult to safe fuzzy mice, especially if they have been away from their mother for more than a day. However if you are willing to put the work in, it can be done. You will have to feed them and keep them warm (fortunately having two, they will keep eachother warm to some point). As I personally have no experience in doing this, below are some links that will tell you what needs to be done.
New watercolor paintbrushes can be used to feed the milk to the baby instead of a syringe, just make sure the bristles don't come out easy.
www.rmca.org/Articles/orphans.htm
and
Taking Care of Orphaned Mice
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PHLdyPayne