Irrlicht Engine

Hi all. I'm sorry for may be dumb question, I'm new to Irrlight )
I make a game with the engine and now have to define what format use to appearence for creatures. The thing is that I want to have sprites for visual effects and don't know what format (if any) able to contain them.
Hint me if I can choose one format of have to write complicated class for sprites and geometry.
PS: BYP for my English

Search the forums for "sprites" there are quite a few topics about sprites.

In the past when I have used sprites I have just saved all of the different stages of my sprite in a single bitmap file. Than you have to define where to find the sprite "frames" in that file.

See Tutorial 6 for an example on how to use sprites.