Do you mean the PS squeals all the time or just when you turn the wheel. Check if the fluid is low or open the hood and listen for any noise from the belt. The belt has a tensioner that keeps the belt tight and the tensioner pully bearing could be going out. The pulley bearing has been know to go out and break the serpentine belt, which leaves you dead in your tracks. Other members have taken the pully off and regreased it to extend its life. Here is the URL for this procedure.
http://forums.vwvortex.com/zer.....id=1138497 This procedure is for the VR6 engine and yours is the 5 cylinder, which may be different.
Hopes this helps.