Pg. 97 of the WDL Manual explains a thing or two about animated sprites and textures. Its actually easier than the manual states. Here is what you do:
1 - Create a SINGLE graphic that contains ALL of the animation frames in it laid out side to side with frame 0 at the left side and the last frame on the opposite end (of course, all other frames sit between in their proper order
).
2 - Save the image in this format: name+#.pcx
Name = the name of the file
+ = Must be there right after the name
# = The number of frames in the image
.pcx = the type of file (PCX, BMP or TGA)
3 - Bring this graphic into WED and it will now automatically animate.
If you need to control the speed of the animation, then you will need C-Script to do it. See page 97 of the WDL Manual.