It would be nice if you'd answer. ;)
You obviously seem to have made a animation already. One way I did it was to copy the animation script in my player in Edit -solo mode. Change the ID's and then make a script that: - On spawn, deletes the players current one and replaces it with yours.
Hope that helped.
If you want to swap one animation for another, can you not take the animation you want, and put it in the animation ID of the one that's already in your character?...
char = game.Players.LocalPlayer.Character -- local script =p YourAnimationId = "blarghhhhhhhhhhhhhhhhhhhhhhhhhhhhh-0512525125" walkAnim = char.Animate.walk.WalkAnim walkAnim.AnimationId = YourAnimationId -- replace old anim with yours. char.Animate.Disabled = true -- resetting char.Animate.Disabled = false
I don't know if this would work, but it's worth a try if you're only replacing the animation
These may be useful:
http://wiki.roblox.com/index.php?title=LoadAnimation_(Method)
http://wiki.roblox.com/index.php?title=Animation