Blender 2.62 animation

I updated my Blender from version 2.49 to 2.62 and I need help on making animations:

In the 2.49 version I made animations by attaching the bone to the mesh. Now I tried to do the same in the 2.62 but it didn’t worked (Using vertex groups).

What I’m doing wrong? There is another way to make animations in the 2.62 version?

what do you mean by attaching bones to the mesh(parenting)?Do you want to export this animations to unity and is there your problem?There is now a dopesheet editor and a action-editor in blender for animations.You must be more specific here, whats the problem.Im using blender 2.62, do animations and export them to unity and have no problem.