Is your line a n line or a c line?
how many lines do you have? one cable & one Sat?
you dont have to edit the mg_cfg file.
you have to edit the newcamd.list file if you have a n line.
there should be 2 lines in the newcamd.list.
First line Cable
Second line Sat
make it look like this but obviously with your details.
CWS = vm.server.com 12000 user-10980 168248 01 02 03 04 05 06 07 08 09 10 11 12 13 14
CWS = tv.server.com 10100 user-7321 1285612 01 02 03 04 05 06 07 08 09 10 11 12 13 14
If you have a C line then go to: etc > CCcam.cfg edit that and put your c line in there.
Of course choosing what cam you want by going menu > setup > softcam / CI > softcam Manager, mgcamd for n line, CCcam for c line.
Hope that explains everything