Pest Patrol (on-line scan) shows up "HiWire" on my machine, but I can't find any trace of hwreal.exe or any of the other files listed in Pest Patrol's information. Does that mean I'm not "really" infected, or that HiWire's creators changed its name, or what?
I'm no expert (but there are certainly some on this thread), however, I'd assume that the files it found are "hidden" somehow from your "search" function. In my case, they were in the "restore" system folder, and I had to disable it before I could begin deleting the offenders. If it's enabled, it won't allow you to mess with it.