I think the first step is to check the bearings. They're known to be a weak point. CVs aren't the strongest point in the car either, neither is the front diff, but the bearings are more likely culprits. You'll know 100% it's bearings if you keep driving it and your ABS light comes on as the ABS sensor on the affected wheel is destroyed.
As Nathan suggests, jack up the front end, place it on stands so that the front wheels are both off the ground. Now you can check for both CVs and bearings.
1) Sit beside the left front wheel and imagine a clock face on the wheel, 12 at the top etc. Grab the tyre at 12 and 6 o'clock and try to rock the top & bottom in and out. If there's movement, you have a worn bearing. While you're there, grab the tyre at 3 and 9 o'clock and repeat the movement. Any motion here is motion in the tie rod ends and the steering rack. Repeat for the right hand side.
2) If the above test proves that both bearings are okay, turn the wheels over while underneath the car with your ear as close to the axle near the wheel as possible. If the spider gears in the CV joint are gone you'll hear them crunch - you might even feel it if you hold the axle.
If the CVs sound/feel okay, have a quick listen to the diff and if that sounds okay, check the drive shaft. It has been a rare problem but it has caused a little grief - the front uni is usually okay, it's normally the joint near the transfer case.