creo6 config.pro option documentation for: INTF2D_IN_OPEN_LOG_WINDOW 
intf2d_in_open_log_window
yes
, no
*
Controls the display of the import log file in a separate window.
yes
- Opens the import log file in the Information Window of the Creo
application. The Open log window
option is selected by default in the Import DXF
or the Import DWG
dialog box.
no
- Does not open the import log file in a separate window. The Open log window
option in the Import DXF
or the Import DWG
dialog box is not selected by default.