Cisco 871w and inter-vlan routing

I have 3 VLANs; vlan1(bvi10) fa0-1, vlan2(bvi20) fa2, and vlan3(bvi30) fa3. VLANs 2 & 3 should be able to access only the web server on VLAN 1 since this is accessible from the internet. I have dsl connection(dhcp) on dialer1 (fa4), pat, and ddns to keep track of my ip for the web-server and ssh. I’m not sure about configuring inter vlan routing on this integrated service router. Can someone help me with this problem?