I just moved into a brand new house and had DTV install new slimline dish on Sunday. I can not receive any of the new HD channels. I've called DTV and they have resent the info to my receiver and I've done two resets and I still can't get them. I did the test channels on 480 and 481 and it worked fine. I tried the test channel 498 and it doesn't show up in the guide. Any ideas? I wonder if it might be a multi-switch problem? I have a service appointment for Saturday afternoon. Thanks.