There is a new version of the HomePNA 2.0 PCI card drivers
in the Linksys beta area:
ftp://ftp.linksys.com/beta/linux_hpna2_0_v2_34_0_2.exethis version is compilable on many more x86 versions
of linux.
You need to extract the driver files by running the EXE file
on MS Windows. 8-(