Well, just pull one of the hoses. There will be a minimum of two lines, high and low pressure. You will want to pull the low pressure line.....the one that uses regular hose clamps.
Now, while you are doing this, you might want to think about adding a small tranny cooler to the return side (low pressure) to help cool and prolong the life of the fluid, therefore prolonging the life of your steering box.
I have done this on my jeep and here is a fairly detailed write-up:
http://www.jeepsites.net/howto/pscooler/
It should be a fairly close procedure to what I have written....you might need to mount the cooler in a different spot....but you get the idea.