Sounds like the CV joints are shot--that's why you're getting the clicking/popping noise only when you're turning. If it was your wheel bearings, it more than likely would signal itself as a thrumming, humming, or rattling that was speed related.
You can try to repack the CVs, but if they're already clicking, they may be too far gone. You wouldn't have to completely disassemble the joint, but that's the best way to do it. In either case, you'll need to clean out all the old grease before you repack. If you have a parts washer, that's the way to go; if not, you can try soaking them in kerosene, paint thinner, or the like. Be sure to get them real clean before repacking them.
Also, put new boots on, even if the old ones are not torn. You'll have to cut the bands off the old ones anyway, and since it's not a real quick fix, it wouldn't pay to just replace the grease without doing the boots. DON'T use a new split boot--use a one-piece.
All and all not a tough job. If you think this is messy, try a front axle service on a Land Cruiser sometime
