I use a mac and a windows pc. It works pretty well with synergy. As Wilbur says, your wireless network is perfectly fine for synergy and wow.

Anyway, here's what I have. Synergy on the windows pc is the patched broadcasting version found somewhere in this thread here. It's configured with two screens (one for each computer), but no links. That way you can't use the mouse to jump between screens, but you get around the spinning bug. I find switching windows like that mostly annoying anyway.

Synergy on the mac is just the regular version. It's started with the following command: /Applications/synergy-1.3.1/synergyc -f 192.168.1.5 (where the last part is the ip address of the win pc).

If you want the mac as your main computer, you'll have to do it the other way around -patched broadcasting version on the mac and regular on windows.

I can't remember if I did anything else to get it working.