hello,
I just installed ics on my w2k pc/network and it works great so let's see if we can get yours going.
first of all, do you have a modem and nic card in your pc that you're trying to install ics? also, you can only have 'pc' on your network that has 'ics' installed as the host. therefore, if your laptop still has ics installed onto it, this will cause a conflict.
below is a link that provided me with lots of help concerning ics.
good luck,
martin