Suspension tear down

Hey guys I've been kicking around this idea of tearing into the suspension on my car this summer. Its got 142000 miles on it and it has at least 30000 on it with no service to the suspension, ie greasing and the like. Im talking about things like replacing bushings and i really dont even know what else, i just know there are a lot of parts to be replaced where things meet. Car has some shimmies to it but that could also be my tires, they are due to go. So I know very little about this but i know i could do all the work. Wondering if this is a worthy project, the cost i would be looking at, and anything else anybody wants to throw out there. I do know about the performance struts, swaybars and, and the sts brace under the hood.

Also i read a post about an update for the power steering hoses to get rid of a grinding nose when the wheels are close to lock, I was wondering if there is a way to tell if your car has recieved the update cause I have that symptom.

Thanks.

Sorry, my car is a 98, if it matters.

Greg, I just had to do wheel bearings and lower control arms, and tried to do the sway bar. The sway bar has been a nightmare, because I can't seem to get one that's made properly. I believe a stealership should be able to find out through your VIN if you have been serviced for the hoses or not. Tires are a very common reason for the shimmy at speed, especially cheap tires...

I spent $700 for bearings and control arms from monsterpartsonline.com. They are just a dealership willing to give good discounts and ship... GM parts FTW!