In addition to what I said, if you go the linux binary emulation way,
you wont need to get the enhanced client, as once the server see's
(thinks) you are using linux, it will allow your boinc client to
download a precompiled version of the linux setiathome client.

Some things to consider.

Emulation is always slower than native code, since seti is a math
intensive application, if you want optimal performance, don't go the
linux emu way.

Anonymous platform is a lot more work to setup, but I think its worth it.

Hope this helps u decide.

Alex