I fear I didn't make myself clear enough. But first off thanks for the many replies.

I am on the receiving end. I need a higher roll-back buffer on my side. One that truncates the file to a shorter filesize on disconnect. ie. I received 1.08 MB, the transfer gets interupted and then my own client rolls back 1 MB to 0.08 MB or the atlernative route would be i would receive 2.08 MB but my client will only except 1.08 untill ive got another 1 MB passed 2.08, so the actual sent data would be 3.08 and my client would show up 2.08 (1MB roll-back).

It comes down to the same thing, something you can set in Remote but I dont know what.

Also the suggested packet size of 4096 Kbits from the supportchannel person: do you mean the packetsize set at your NIC settings for data transmissions or something you could set in mirc ?