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IK on the feet will NOT solve the problem! It keeps them locked in place with the hip. Breaking the IK chain and attaching the feet to the floor just adds headaches to the animation process.

Hi while I certainly agree with your advice about learning to animate by hand
you could NOT be  MORE WRONG in the above quoted portion of your statement

The O.P. is Obviously a beginner at poser animation.
 He/She Has three  options:

Scour the web for Canned BVH File/ animated pose sets& scripts and hope for the best "fit" as far as results with the figure in use.

LEARN how to use the tools in poser ( GRAPH EDITOR,DOPE SHEET &IK)
and create there own original character animation.

( RECOMMENDED!!)

Use the FREE version of Daz studio & BUY the "animate+ plugin for it and do ** THIS**.
Cheers

You have NOT pointed out how breaking the IK chain and linking the feet to the floor or other objects gives less headaches Wolf. I don't mind if you disagree, but show me why please. And as this is the POSER forum, I expect the answer to be "For Poser" and not DS! Kthxbye! 

Someone else mentioned breaking the IK and linking the feet to two separate objects. Again, I have to ask WHY? You can move the feet just as easily and acheive more natural results leaving IK intact and manually animating the feet yourself. Breaking IK in hands and feet is the long way around in my opinion and unless you can show me how it's shorter and less headache inducing, I'm standing by my experience in the matter.