LAN VPN Router Radmin/VNC

Hi all,

Situation:
- 2 computers behind router (Linksys - WAG54G - Firmware: 1.00.19):
* Win2000 (radmin/VNC host)
* WinXP (Radmin/VNC client)

Both have network access (DHCP). No problem to connect from WinXP to
Win2000 with Radmin/VNC. But: when I connect my Win2000 laptop through
VPN to the network of my work, I loose connection from WinXP to
Win2000. Seems normal, but is there any way to still have Radmin/VNC
access? Both computers pass the same router, so it seems physically
possible? Or am I understanding things wrong?

Please advise...

Kind regards,
Frederik