Can u explain your file / folder structure a bit more clear Ppprre? I am currently in the works of converting the Gen 2 Sprites obtained from here
http://sprites.pokecheck.org/?gen=2 (Just save the html page and u will save the entire collection of .gif and .png with it)
the .gif needs to be in the correct folder i.e back in the back folder etc then added trough the GIFMaker GUI
when all 4 are added u then end up with this
View attachment 73
Once u have that u need to follow the next step for the PokemonSpriteCreator which will give u this
View attachment 72
Once u have this u can convert these to XNB using XNABuilder (XNAformatter)
Edit:
U will need this program to convert to xnb
http://sourceforge.net/projects/xnbbuilder/
See next post for the requirements and download links in order to run the tool