Vlans With ISA 06 Server As Firewall

Pairing ISA server 06 as firewall and Cisco router 1841 with VLANs

Hello IT managers, I'm faced with a challenging network set-up considering ISA 06 server, CISCO 1841 router, and Catalyst 3550 switch as key role players in the network. Anyone who could help me wth a valid and working configuration or advice. The scenario is: the ISA 06 will be facing the cloud...