Volvo Repair: 2000 S80 2.9 non turbo power steering hose, power steering rack, high pressure hose

Question
Hi there again. How's SW Florida? I'm sure you guys are enjoying the weather there. Anyways, I took my car for an oil change at the dealer with their current promo for only $19.99 (a good deal). Now they told me that there's a leak in my car's power steering high pressure hose and it needs changing. Now my problem is that the dealer's cost to change it is $481.00. I want to do it myself, so can you please tell me which one is the high pressure hose and the procedure on how to change it myself. Hopefully it's not difficult to reach because I know the space around that area isn't much. Again, thank you in advance. You have been very helpful to me. May the Good Lord bless you and your family always.  

Answer
it will be the metal line that comes out of the power steering pump and goes to the power steering rack.as for exact directions to change it I am not sure I would need to see it since I have not done one.it is going to be difficult without being able to get under the car.