Man, this is the internet. You're asking us to diagnose a car problem over the net which is hard as balls.
Like I said earlier, check the tie-rod ends. If the boot is torn they might be siezed and resulting in the squeeling noise or the ball-joint might have just come apart. The tie-rod end could have....there are a lot of could have's.
Hell you can even unmount the rods ends from the knuckle and check the rack if you want.
Point is, you need to get down and dirty and work this problem out yourself. If you can't even do the simple things outlined here then just go to a mechanic and be done with it.