Speaking of VPNs..

[Mark]

I have a small business client that is still running on Windows NT
3.5.1.  I'm thinking about putting Fedora on their main server and
making it a firewall, internet gateway, etc on their DSL line.  I
brought it up the other day, and they will not mind the change as long
as their employees can still VPN into the server, and PCAnywhere into
their PC or a server.  

I already have the a test server setup to show them.  DHCP is giving out
an IP address (192.168.1.x), BIND is working and resolving, and a nice
IPTables rules are set in.  Now, I need a VPN server that will let their
Windows 2000 and Windows XP Pro laptops connect to the VPN from their
cable modem/DSL at home, get a internal IP address, and be able to
PCAnywhere into the machines.  

Can someone recommend a good one that will allow this?