All right,
finally got this thing working (there were some things in MiamiDX that hadn't gotten configured, I went through the guide and got everything set up properly.) Took some doing to get a download tool that actually
worked (wget just barfed out cryptic "unknown error" messages, but GrabURL worked once I got rexxdossupport.library installed,) but my Amiga is now online at a whopping 10 Mbps

So the next question is, what's the best setup for Internet software for a moderately-expanded A1200? (40MHz 030, 32MB RAM, AGA, 4GB CF-over-IDE, ClassicWB 3.1.) Currently I've got Voyager, which is nice and responsive, but wastes a hell of a lot of screen space even with button icons turned off; is there a better browser that can get along pretty well on this setup? Also, is there a mail client for AOS 3.1 that supports SSL/TLS?