Hooked up a remote dvr for a client. He has Embark DSL (600kbs down and 100kbs up). I have a Linksys WRT54G router setup off of a 660 series Embark DSL modem. The modem is set to Bridge and the router is providing internet to a computer and the DVR. I have ports 554-557, 1600, and port 80 forwarded to the DVR so all inbound WAN traffic will direct to the DVR for remote viewing (built in viewer). I'm getting a horrible ping of about 800-1200 when I ping the IP and the connection drops out when I try to connect probably because of this high latency. Any idea??? Thanks!

You need more bandwidth. A LOT more bandwidth. 600 / 100 is nowhere sufficient for streaming video.