to all istoryans:

Currently we're using leased line w/ 128kbps, now we're planning to migrate it into VSAT 128kbps/32 and I have existing router which is Cisco 800 series & ISA server 2000 act as firewall & proxy.

Now the ISP will provide us a Dish with VIASAT (RCST) device. Im just confusing if still we need to use our router? especially, we are going to implement a VPN after VSAT installation. Please give me an idea. Thank you.