yes vanitygen works for DMD addresses
just use the correct parameter -X 90
download from here https://bitcointalk.org/index.php?topic=25804.0
this utilize my first GPU to search for a DMD Diamond address starting with dTestAD
and save any valid addresses with their private keys it finds into the file.txt
never use any online services that generate private keys for u!
generate urself or be happy with random address names