how to edit Trainer Gender Select Sprites (BW2)????

[jiraiya2point0]

Hi to all,

After spending the last few nights working on a rom hack of Black 2 for a group I am part of. I've hit a snag with a few files.

Here's a list of things I have managed to change without any problems.

Professor Juniper Intro Sprites

Xtrans sprites

Trainer Card

Battle mugshot.

The only thing causing a headache is changing the sprite in the gender select screen of the hero/heroine.

I've noted that the file is located in the same folder as Junipers intro. Tried to edit the files but they seem to be BMD0.

If anyone has info on the tool used to edit the textures located within this folder, it would be most appreciated.

Many thanks in Advance