How to apply custom texture to custom unit?

Posted this in the wrong forum, so posting it here now...

I'm having problems with custom units. I changed a texture for the grunt, and I made a new unit to test it called re-grunt based . But I don't see a field which lets you change the texture. I tried to make a new folder in the mpq called Units\Orc\re-grunt and then placed my texture and the grunt mdx files in it, but it didn't really work.

Any suggestions?

It you convert a .mdx to .mdl open it in note pad hit control f, brings up search, type in texture and there is a field for which texture\textures it reads.