tRio should now work with windows and router-based DHCP servers.

Works great for me.

Although I can't tell you how to fix your situation, I can tell you how I did my install (maybe that'll help?)

I installed the first part of JRec (latest version) (did not install the second part )
installed tRio per instructions
and installed Rio Audiomanager that came with the Rio ver1.4

I've got a linksys cable dsl router that handles my dhcp.

So far, so good.