tetonbob

It's more about the access to the router than the wired/wireless. These infections seek internet access to routers which have out of the box user name/password combos, or weak passwords. Once they have access to a router, then change the DNS settings in the router, not on the PC, so all traffic out is directed via their control.

Some reading:

http://voices.washingtonpost.com/sec..._wirele_1.html

http://www.channelregister.co.uk/200...er_insecurity/

http://billpstudios.blogspot.com/200...ur-router.html

http://www.geekstogo.com/2008/04/08/...-to-read-this/