Do u already have it working with dcc send?
I remeber someone else had some trouble with not using bigend values (most significant byte first) in the checksum, maybe yours is the same problem, I gave up on mine, i just found it to time consuming to script into a mirc a replacement resume, but im assuming your doing this in another language.
PS: if im all to hell with what im saying, sorry its getting late and the mind drifts
