Newbie: NoCat doable in this setup?

Hi!

In preperation of a WLAN Rollout in our little company (15 people) I'd 
like to know if what I think is possible, is actually doable.
Here's a little network diagram in ascii:

Internet
     \_
       \ xDSL Router           +-----+       ____Company LAN_______
                    \___ eth1  | FW  |      /                      \
                               | Red | __ eth0     192.168.0.*      |
       192.168.119.* ___ eth3  | Hat |      \___+_______________+__/
                    /          +-----+          |               |
    WLAN AP (Linksys/Netgear)                Fileservers       PC's/MAC's
     (((( /\ ))))
   Mostly WinXP Notebooks
        

Firewall runs: Red Hat Linux
               + custom IPTables script
               + transparent squid
               + openswan ipsec

So far so good. My questions:

1) Can NoCatAuth work without a HostAP Wlan Card in the Server 
(according to the ZoneCD Package this should be doable)
2) Can ipsec which works for roaming users (teleworking) also be done 
without specifically logging in thru NoCat from the WLAN (Treat ipsec 
wlan just as we would from the Internet)

Thank you in advance for any answers or pointers to doc's with more info 
(as I wrote this, the wiki was down).
Leonard