Select the name of person receiving the file, and file location, Minimize - will put the icon button in the active window after connection is made.
Fast seed is the packets being sent , fill spaces refers to the way the file parts are sent.
Packet Size is how many bytes per second for the transfer this number may be increased Using the drop down arrow will reveal any nick that a file has been manually sent to prior. If you set up the required settings in the DCC - folders area the file should go to that selected directory. By default all received files will go to the main mIRC directory or in declared sub directory. If the file is not in the above location. Then click find now.