Jameco (http://www.jameco.com) have some items that might be used: DB25 connector assembly, item #149622, $4.95, they don't have the 2x3 connector, but they do have a 2x4 that might be used. The cutout on both my C7 and Replay remotes looks like it is big enough for it. Item #103253, $.29. If not they do have a 1x3 connector, you can probably glue a couple of these together to make a 2x3, item #157382, $.15 (min. purchase of 10)

-lars