Differences bettwen adsl router and ICS

Hi all

I currently have ICS setup on my home pc (XP, SP2, which uses USB adsl
modem) and I sometimes share my work laptop on this network to gain access
to a VPN through my home pc.

However, I can no longer do this as my work laptop now has a firewall that
blocks all 192.168.0.* outgoing contact. What I wanted to know is, would
this be resolved using an ADSL router? Will I still need to go through the
192 ip address to access the net?

Any ideas?
Thanks