Zelandeth recently had a "4 Wheel Alignment" on his Volvo at a local specialist and was happy with the service he received as reported in his blog here, producing a nice little before and after diagram.
Alignment is all about toe, camber and caster as far as I can work out, but the question I asked myself was, is "Toe" the only thing that is really adjustable, and are the others not just determined by the designed suspension geometry as the car comes out of the factory
I find out that some cars do allow some adjustments to be made, and with modifications like special replacement strut bolts from the standard factory issue, with other vehicles, you can introduce some sort of adjustment for camber. As far as the rear goes what is there to adjust
Not that I would recommend anyone following my less than precise approach but I have never adjusted or had the camber adjusted knowingly on any vehicle I have ever owned, and caster I can't see how any adjustment at all is possible.
Possibly the standard bolts on the strut to hub carrier allow for some movement as far as camber is concerned, but never considered it in any of the times I have changed front coil springs, just simply pushed the tightly fitting bolts through the standard holes and torqued them up to the correct spec.
Neil