I do, but the LCIII only has localtalk, and being in a rural area, things such as LC PDS ethernet cards are not easy to find. Not to mention that since the LCIII was my first Mac, I kinda want to keep it as original as I can.
As I said, I do have OpenTransport installed, but that only helps with TCP/IP (once you're connected), Open Transport does not have a PPP client, I think you're getting Open Transport confused with the (very good) PPP control panel that OS 8 comes with.