Hi all,
As well as the common file format for pcb proto is .brd, I just found a nice trick for those like me who are used to work with DXF / AI etc..
This is a method on how to import DXF paths in Eagle trough HPGL format with inkscape.
Found it very useful =) http://badcafe.co.uk/2011/03/20/dxf-hpgl-to-eagle-script-conversion/
Maybe it could help some of you =)
Regards,
JK