Hi t.man,
first off I suggest to leave the power connector as it is. DC-power jacks are very bulky regarding pin sizes. No (affordable) PCB layout software is able to make a solderpad slotted 2.5mm long and 0.8mm wide. Placing the solder pads at a pitch distance of 1/5 inch (5.08mm) you might use screw head terminals.
I already made an improvement suggestion to CHERNG WEEI TECHNOLOGY CORP. at Taipei/Taiwan for a DC-power jack using pins for through holes fitting on a PCB easily using standard solderpads. (things are going slower in Asia than in the rest of the world)
The import of Eagle data into any other software will be difficult, most probably impossible.
You might download the latest Eagle light version (license free) and use the files as they are made using Eagle v. 3.55. The PCB size limitation of 100X80mm is only effective if you want to create a board. Opening any board size those restrictions don't apply (programmer's error, plausibility check in the wrong place
or programmed back door
)
Download from
CadSoft Online: EAGLE Layout Editor (latest version 5.2.0)
Boncuk