If it's using bridged there isn't any point in changing the others as the adapters aren't being used at all. The port forwarding on the vmnet 8 shouldn't affect vmnet 0 but it can't hurt to remove any forwarding rules if there are any.
I would agree that windows is refusing the connections as everything we have done so far indicates all ports actively refusing connections. Pinging isn't always a good test of conectivity as some firewalls (and routers) can be set to respond to pings (ICMP traffic) whilst blocking all other connections which is why i was suspicious of the sunbelt firewall.
When doing these tests are you using the Windows LAN IP or the Hamachi ones?

