I compiled the v2.34.0.2 HomePNA 2.0 driver on SME 5.0 (kernel 2.2.19-7.0.

if anyone else needs it. The il.o file is at
http://www.chrouch.com/e-smith/ and install details (general Linux, not SME) can be found at
http://www.homepna.org/support/faqs.html#FAQ6 if you're interested. I haven't had time to do anything other than just compiling it... Hopefully someone can get some use out of this...