Dunno much about the wireless part - don't have a laptop so it's a useless gimmick for me - a cursory glance at the specs show that dinger's right, they have 802.11g and bluetooth as well (though that's not what most would classify as a serious wireless network) but both as optional extras!
They also come with standard 10/100BASE-T Ethernet thru cable, which is a cheaper option unless you really need to use 802.11b/g.
The rest of it - setting up macs & PCs to network - is fairly easy.
I use TCP/IP and static numbers 192.168.0.x (DHCP): PC with win2k is server, mac as client. That's for Inernet Connection Sharing (I use the PC for games and run MP game servers on it, so it's easiest to run the net connect through the PC). The PC is a bit moody about networking and can need a lot of coaxing, and the occassional restart to get internet on the mac. The mac is mostly automatic, and doesn't need restarting for network changes to take effect.
From the mac system prefs panel you change the network settings (choose type of connect, enter numbers) and sharing settings (printer, type of network, firewall settings). Once setup (you can have multiple network configs - for office, home, hotels etc. and switch between them for ease). Command K gets you to the network browser - choose SMB (for PC file sharing) and rummage for your PC for file/printer sharing. For the 'net (if you use ICS), the mac just finds it if its there, using Rendezvous. They also have a whole bunch of other more esoteric network solutions. 10.3.2 can even cope with win2k server doled out boot preferences (can't remember the real MS term for it) - you get the win2k server user's folders etc shared out to the mac.
Sadly Dinger is also right about the mac world being devoid of many of those geek-machismo inducing numbers that reign in the PC world and sticking to the alphabet more by using names like AirPort, and firewire and stuff instead. Easier to say and remember, harder to get confused and thus a real turn off for the techie. See also photography, cars and sport stats for this curious number fetishism - culminating in the famous Spinal Tap "This one goes up to 11" moment.
On the macho plus side though, your sperm count will be higher than the PC boys if you actually use it on your lap, as the G4 processor runs a lot cooler than intel/AMD chips.
