Changing Power steering lines

My lines are shot. I'm gonna need help doing this one. Anyone been here before. I could use the help with the install. Tips, tools, brand, etc. The truck is a '99 old style.
Thanks

Ironically, this is exactly why I just checked this site myself! My high-pressure hose has sprung a leak this week. It doesn't look like it would be that hard to replace them, but I am not sure. I am going to call tomorrow to get some prices on parts and install and decide whether to do it myself or not. Not looking forward to the mess!