Worth doing a search on this forum (using the yellow search button above) but here's my recent post on doing the top engine mount for starters.
http://www.volvoforums.org.uk/showthread.php?t=40363
very easy.
I guess that by the fact they have said the disks are worn unevenly they are probably suggesting they should be changed. again, supposedly an easy job but still have to do it on mine. The parts aren't cheap! see this recent thread also.
http://www.volvoforums.org.uk/showthread.php?t=40382
Hope this helps,
Tim.