VPNs on Mac OS9 or OSX?

$hy_guy asks: "I hope you guys can give me a hand here. I wanted to purchase a new Power Book but I want to be able to still connect to my office via a VPN connection. I am not going into why I'm going to purchase a Power Book but I'm looking for some solutions. Is there anything available for OS9 or OSX, I would assume that there would be a better possiblitiy with OSX. I also rather not run a Windows emulator within OS9 or OSX to do this."