Company LAN === ((( Internet ))) === Cable/ADSL-Modem === WL-500 Router === PC

=== ... VPN Tunnel

If you want to use your router, to connect to your companies LAN, make sure to consider the following:

1. You must use a different IP-Range then the company LAN
192.168.1.0/24 is a very poor choice.
Find out what the company LAN uses, then use some other (example: 192.168.88.0/24) adress range.

2. In your VPN Client (I use CheckPoint VPN-1 SecureClient), make sure to activate (at Connection - <yours> - Properties - Advanced):
Connectivity Enhancements
- Use Nat Traversal Tunneling - on
-- IKE over TCP - on
-- Force UDP encapsulation - on

Note: 192.168.1.0/24 means: subnet mask 255.255.255.0