You just need to unscrew the (4) wood screws that hold the aluminum back plate on the speaker. Be careful pulling it out, it might snag the fabric, just go slow. Once the plate is off, you can see where the + and - wires are and how the wires and stock connectors are attached. Just unscrew the small nut that holds the connector on and whole connector will come off. Replace the now open hole with whatever binding post you decide, (I recommend the Cardas pure copper posts, but you can use whatever). Depending on the connector, you might have to enlarge the hole a little bit.
It really is a pretty easy mod, but just take your time. Sorry you’re not closer, I could do this for you in about 20-30 minutes or less.
Good luck!