Well shoot. I ask because its a totally different client and it has different files it uses through the whole process, I believe.
So what file did you have to alter to get it to connect to the free shard?
EDIT; I decided to do a little digging as nothing jumped out at me in the uo folder and found that there's actually an app to connect you to whatever freeshard. Since I don't know a whole lot about [removed 3rd party reference] or freesharding in general, here are my suggestions in order of pain-in-the-assedness;
1. Do a power cycle.
1a Unplug all networking equipment and turn off your computer.
b Plug in your DSL or cable modem, and wait until the DSL or Cable light is solid green
c plug in your next peice of networking equipment and wait until the Internet light is solid green
d Repeat C as necessary until all routers/hubs are plugged in
e boot up computer
I don't actually expect that to fix it, but you'd seriously be suprised.... and hey, easy first.
2. Do a system restore. You'd be suprised how much stuff this fixes, and its fully reversable. You will lose no data. How does it work? Magic.
3. Force UO to patch. I forget exactly how to do this, but I'm sure someone here has it fresh on their minds. Do you change the version # in that .txt file or is it an actual patch file you gotta tinker with? Either way, UO should start downloading the latest patch and hopefully overwrite whatever got screwed up. I might tinker with this in a couple minutes out of boredom (I'm freaking bored).
4. Hook your computer up directly to your modem and power cycle. If it works, you've got a port forwarding issue with your router, and that can be a pain. Let me know if that's the case and I'll help you out.
5. Reinstall UO. By this I mean uninstall UO completely, save your macro and desktop files and delete the folder. Download and reinstall. Installing something on top of itself is kind of sloppy and can cause problems as often as fixing them, plus you'd still have to patch the whole thing anyway as whatever file above would be overwritten to an earlier version, so you're not saving that much time in the scheme of things.