I am having trouble with our remote users over the WAN. We have T1 at both location using ISA for our VPN connection. when accessing terminal server using RDP. the screen refresh is very slow. I have try changing the experience setting from custom to modem 56kbps on the client side that run from a Dell OP 745. When I use RDP on site there is no issues. is there some other settings that could be changed to help with this issue, ether on our server, GPO, Desktop and or RDP.