Sprites!!!!

[DarkX]

I was wondering if someone could post a tut on how to make it so that you can use both diffrent sprite sizes(32x32&32x64), like assign them to a class, like you pick fairy, you get the 32x32 sprite, you pic ogre you get 32x64 or just so you get to pick the one you wanna use, like use big pics or something on the char create.
Thanks in advance,
Korrey D.