Can't do VPN through my Linksys-Help Please

[mrgauth]

Have a Linksys WRT55AG on a working static IP internet DSL connection. Can serf the web all day long with pc connected to the Linksys. Getting and internal IP of 192.168.1.something from the Linksys and it all works fine. But when I try to use my corporate SecureID token to create a vpn IPSEC tunnel to my company, it doesn't work.

Anyone have any suggestions?

Thanks.

 

[Serbtastic]

Do you get any specific errors when trying to connect?
If you connect directly to the DSL modem (taking the Linksys out of the loop) can you successfully establish a VPN tunnel?
Finally, did you enable VPN passthrough as specified in the router user manual?