What kind of problems do you encounter with bones animation? Please be more specific.

Normally you animate the model (almost) the same as with vertex animation (in MED and in lite-C with ent_animate). Only in special cases you really need to write specific code for bones animation such as eyes that should look into a certain direction or similar.

Just start with a code that blends between idle and walk when necessary, I think the manual contains enough example code to implement that. Then extend the function with your separate animations and let it take care of all animation and blending of all modes (idle/ walk/ ...), should you use a state machine for your entity.
If you encounter any problems, post here.