how do i make a custom emblem?

[homsikpanda]

i'm trying to use this mod
http://www.subsim.com/radioroom/show...78&postcount=1
to add this picture as an emblem

i've got a "the compressonator 1.5" to convert it to a .dss file but when i add it, it just shows up as a black square on the sub D:
what am i doing wrong :c