newbie needs mgcamd help

Hi new to the site but at my wits end with my newcamd list file. For some reason it stopped working last week. I know all about the dark channels but there are still some channels left that are handy. My provider says the line is still active. He told me to cmd ping a script he sent me so I did and it came up with request timed out 4 times. He said there is something wrong with my isp. Afraid i only know the basics on a laptop so I wouldn't know where to start to solve this problem. Ive also messed about with cams trying them in different folders I fear I might have cocked them up now also. Would be much appreciated if someone could point me in the right direction. Its driving me mad. thankyou.