if you use the Pro sprite animation system then you would find it easier to have the idle anims on one image and the run anims (or whatever) on another, then just use the create animated sprite and play animated sprite commands to play the animations to two seperate sprites, keep one of them off the screen and then swap em over when you want to go from idle to anim and vice versa.
Mentor.
PC1: P4 3ghz, 1gig mem, 2x160gig hd`s, Radeon 9800pro w cooler (3rd gfx card), 6 way speakers.
PC2: AMD 2ghz, 512mb ram, FX5200 ultra, 16 bit SB.
Mini ATX cases suck.