Gr2 export and questions

[lTz 12]

Hi, i just installed the stuff from this post

What i don't know is how does the new gr2 work
For example i want to add the wings from the tutorial folder, this have a gr2 file and a dds one
Till now all my wings  had a mse , mde,  dds file
i add them like this :
 

chrmgr.RegisterEffect(chrmgr.EFFECT_REFINED + 29, "Bip01", "d:/ymir work/wings/test/test1.mse")

But what if i don;t have the mse and mde , just gr2 and dds, is there a convertor ? or based on the post above i can just put them like wing.gr2 and it will work?
I'm kinda confused on this part so if anyone know and want to share how i will appreciate
Ty

Edited February 5 by lTz