I too am a Volvo owner -- 940 Turbo. Love the car, but it aint no Benz. The 201 is my German car. The 940 is my Swedish truck.
I'm very familiar with the use of brickboard, so I hunted this info down for you. The following link has very detailed info re: timing belt change procedure:
I have the parts to do this procedure on my Volvo -- I just haven't gotten around to it yet. The consensus on this job is that you should definately replace the belt tensioner while you're in there. Also the seals for the 3 shafts. And probably the water pump.
The tensioner and the seals are cheap and should take you all of about 5 minutes. The water pump is your call. (I will be doing mine at the same time)
FYI: You can get Volvo parts at Fastlane (on this site).
Good luck. Let me know if I can help in any way.