Grab yourself a really, REALLY big breaker bar. I've removed several sets of front struts and one set of rears and all of them have been pretty tough. Strangely enough, removing the strut to knuckle nuts is considerably easier than removing the bolts. I used a 5 foot floor jack handle over the breakerbar in order to loosen the bolts and work some penetrating oil in. I also found that an air chisel with a very blunt tool is a HUGE help to pound the bolts out.
You will not need a spring compressor for the front struts unless you intend on separating the spring from the strut. For the rear, I recommend one for safety but BillBost and I removed the rear struts from the donor car without one. I'm not sure I'll do that again to a parts car and would definately use one on a car I cared about the car.