I have SP2 installed on:-
my desktop - wired into a Belkin wireless router - Belkin software handles the interface, Windows XP Home handles the rest.
My TR1MP Windows XP Prof handles the connection.
My son’s Tosh Satellite 2450 Has a Belkin PCMCIA cardbus wireless adapter and Belkin software controls all.
My Tos P20 Windows Media Centre Edition handles wireless/internet.
There is no problem at all with the connections. All PCs can be active, two playing a LAN game, one on the ‘net and another on newsgroups - no faults ever.
Really works beautifully :D Best £200 I ever spent, getting the house wirelessly networked. Even my iPAQ5550 joins in seamlessly.
Rik