This one got me :)
Having used Mosaic 2.0 and PC-Mosaic 1 (?) (the recent full release) you
can see that it is possible to obtain image sizes and ammount recieved
so far (you read say the GIF header and I believe that has the size
info in it or something :)
In PC-Mosaic it tells you something like 20K read (of 100K) - 80% to go...
That would be a nice addition :) But I dare say people have discussed
this already :)
Paul