Select an .iso and program selects .mds

[slats754]

I am trying to write an .iso file from my HD to a dl DVD, when I try this the program tells me I should have selected the .mds file and automatically selects that file, and tells me not to make this mistake again. When Imgburn loads the .mds file it does not give me the option to load the .iso file. The .mds file is only 9 kb and the .iso is 7,800,314 kb. Please explain to me the .mds and should I remove it from the directory so it will only find the .iso file that I can select?

[spinningwheel]

The .mds file mainly contains layer break info. Choose it and it will do what's necessary to burn the disc.