RE: Fly Rod Combo Walmart??
Wolf killer has got the right rod, but you may want to consider "medium action" as it will be a little more forgiving of casting errors and will mend line better when "nymphing"...this is assuming that you're at just a moderate or entry level when it comes to casting precision.
One thing that will really help getting the feel for the casting is throwing streamers. When you feel the streamer tug at the END of your backcast (behind you)you know you're ready for the formard cast...it will really help with your timing...remember you can only effectively cast line that has already straightened out from the previous motion.