I just did this. What was said is right on the money. Not a hard job at all if you do it right. I would pop the lower ball joint and use an internal spring compressor. There is no way on god's green earth that you will seat the spring into the A arm without the compressor so dont bother trying.
I found that it was better to pull the rotor and dust shield when doing this. Lowering the A arm after you pop the ball joint is much easier when the dust shield is not there. And frankly, in some cases the shield has to come off. Another 5 minutes is worth the hassle. I did not use the compressor removing the old springs, just had a jack under the A arm and lowered it slowly. By the time it was down, not much energy left in the spring. Use a bar to get that spring out, and then use the compressor on the new moog spring. If you do that, the new spring is cake to seat. Goes right in. Slide the joint back in, put the nut back on and you are done. Easy! Do not go for the control arm bolts. This is a pain in the butt!! You may however need to buy a spring compressor. The parts stores I went to did not have the right ones for rent. This may not be the case in your area though. Good luck!