may not be possible
because of the dynamics
involved.
like a statue made
of stone or clay.
you can remove
materials from a
larger one to make
a smaller version
of it.
but you can do the
same in reverse.
therefore, making
that little pic larger
is not possible.
a possible solution
would be to print that
little image then take
it to a copier like and
make an enlarged copy
of it.
then scan it back into
your system.
the above process might
work with a scanner.
however, you cannot
bypass the above manual
process by using the
computer to enlarge
the image digitally.
if you have some skill
with graphic imaging
then you might try using
a graphics software like
photoshop.
but you will have to do
a lot of retouching and
artistic skill to retouch
an enlarge pic from a
low resolution pic.
the copier method above
is faster.