When good LS's go bad...

[icetigr]

Much like the rest of you, I have a 2000LS with about 70k miles on it, the list of items replaced include
1) Windows (multiple times all of them)
2) Coils (ouch!)
3) They're stating my valve cover gasket is leaking causing the coils to go bad (Another OUCH, think I'm going to have to replace it myself)
4) Thermastat
5) Butt Warmers
6) Coil boots?! (Another condition they state due to the oil leak)

In summary, I love the car and man it's a quick car but it appears that none of the dealers in the area have a clue. Currently it's in the shop with them replacing item 2, but they say it's all due to oil leaks.

So that brings up the next question, has anyone replaced the valve cover gaskets, and if so, how difficult is it? I've replaced many old ford gaskets in my life as I've owned and still own a late 60's mustangs but before shelling out 300+ dollars for this, would like a consensus from someone who has done this before...