FINALLY !!!! After spending the night running bitlocker, during this i spent more time on the internet and for the sake of those who read this, I finally found some data shredding software that works as its supposed too. After waiting for the encryption to finish, i was able to finally run this software and this one ACTUALLY WORKS !!!
Disk Wipe from www.diskwipe.org
Free, simple to use.
I went ahead and just went with the one pass.. After all the drive was encrypted anyway.
Besides which - One pass it seems is enough.
Just adding this info for the sake of others in the same boat. This damn thing had me stumped for the best part of an eve, trying to get new hardware to work with what is mostly old software out there.
That Darik's DBAN was particularly finicky.