Well, it doesn't howl (too strong a word, really) when standing still, the power steering pump has beeen replaced SINCE the noise started, and the first thing I had checked was the wheel bearings.
I will cheeck out the ball joints.

Also, I'm not sure if i"m imagining things, but it seems to make a bit more noise when making a sharp right turn.

Unfortunately, my hearing is pretty bad.

Any other ideas what it might be? What's the parts cost/ hours of labor involved to replace both sides, as well as any extraneous rubber, etc.?

Tom