Test that you did it right
Dismantle your ePods, you can follow the directions here. (Thanks Gitch! I didn't consult these directions when I did it, but the description is much more thorough than I care to write.)
STOP AT STEP 15!
I recommend NOT disconnecting your battery, because this is the equivalent of a
hard reset.
Also, remove the left-hand black plastic side panel by removing the single screw
holding it on.
Make sure your power connector is not plugged in when you take it apart, even though it's only putting out a few volts shorting it would be bad. Also, take note that the little circuit board on the right side of the screen the the electrical ballast for the backlight. You do NOT want to touch it when it's powered on. It's putting out about 600V and can burn you pretty bad. Luckily I did not learn this the hard way.
Fortunately for me, I have 110 gauge punch down tools and modular Lucent RJ45 jacks lying around, making it an exceedingly simple matter to test that my device worked, if you do not have such things lying around your house you can either go to your handy local electronics shop or you can just hope that you did it right and solder the wires onto the RJ45 jack that you have. It gets messy if you try to solder/desolder these more than once, so don't if you don't have to. If you are sure you did the soldering right on the Ethernet card, you shouldn't have anything to worry about at all.
Your RJ45 jack likely has all the pinouts coming out the bottom of it where there are also two little plastic clippy things for snapping it to a circuit board. Break off the plastic things as cleanly as possible (twist them with pliers and they should come off nicely). Bend out the pinouts so that they all protrude from the back of the jack (you're going to epoxy it such that if you didn't bend the pinouts so they poked out the back of the jack they would be pointing up in the air, which would short them on the speaker).
You probably are familiar with Ethernet cabling, but in case you're not the wire order (if you're looking at the transparent connector on the end of Cat5 Ethernet cable with the contacts facing upwards and the cable pointed to the right) is:
White/Orange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown
This means you solder White/Orange to the first pin, Orange to the second pin, White/Green to the third, and Green to the SIXTH. If you do it this way you can use any Ethernet cable at all to connect your ePods to a hub/switch/router.
Soldering the jack is not a trivial matter, I recommend soldering wires that you bent into loops like in the picture below (sorry again about the focus) then hold them on the pin so if the solder wasn't there it would slide along the pinout on the jack. Then just touch your soldering iron to the solder and it should work fine. I used heat shrink tubing (1/4" was what it said, but it looked smaller) to be overcautious, but you don't need to if you solder cleanly.
Insert the Ethernet card into the PCMCIA slot. I did not try to reattach the black plastic skeleton to the circuit board because I didn't have the patience to glue it, also it could get jammed in the slot and never come out again, which would not be good. BE VERY CAREFUL to insert it gently and make sure it's centered; without the black plastic part it will not guide itself onto the pins and you will have to kind of stab in the dark until it feels like you got it in. At this point, reattach your VGA and display power cables, push the power button and keep your fingers crossed.
If it doesn't detect the card then the card is not inserted properly. You can be sure it's detected if you're on battery power and it asks you if you want to use the card on battery power. Say yes, and if you don't get a prompt asking you for the driver name for the card then you're in business. Enter the appropriate TCP/IP info for your environment. If it asks you for a driver name, your card is not inserted correctly, or it's FUBAR. Let's hope it's number one. At any rate, you're probably screwed if you get this message. E-mail me if you have problems here.