I have successfully installed Koppmyth R5D1 onto my PC but I have the following problems:

1. During config. MythTV was unable to find a channel for my optus cable and now I want to add it. How can I do this? There doesn't seem to be a menu option to set channels. Also can anyone tell me how to get it to pick up a channel for optus? I tried using the australia-optus selection without success.
2. I can only get sound from the TV capture card I don't get sound from my Soundblaster 5.1 card. What setting have I missed?
3. I use a Hitachi CP-S210 projector which works fine until the MYTHTV boot and the the picture goes scrambled. I had a look at the XF86Config-4 file but it seems to have lots of monitor settings. Which one is used?

Thanks in advance for any help.