Limewirer, The Phex size filter does not quite work that way, but you can set a minimim and maximum limit, which I haven't used but it is Much much better than nothing!
It occurred to me, wrongly, that you could put the file size you wanted into the Phex Word filter but of course you would only get All files that size.DUH
I too am not a developer, but there must be SOME way to filter out a file size, in Limewire the same way you filter out a word... just in a different field, or am I being unreasonably naive