mga BROs....

im setting up a VPN system for our VOIP system, kaso i got this problem with our connection sa internet.. we have an existing PROLINK WIRELESS ADSL FIREWALL ROUTER which is from globe broadband and we purchased an ALLIED TELESYS AR415S SECURE MODULAR ROUTER capable of vpn.. problem is how to integrate the two?? its ok if we do have a DSL Modem/Router or something else coz its easier to integrate with our ALLIED TELESYS router, problem kay ADSL man gud ang existing connection then the configurations within the ADSL FIREWALL ROUTER... ANY HELP FROM THE GURUs HERE? HELP SAD MO MGA BROs wui...

thanks...