Two options -
1. Go to your local main dealer and ask them to do it. You'll have to pay
for that though, about an hours labour (though in reality it takes 10
minutes...)
2. Search eBay, find the correct tool (search on "Volvo Service Tool"), buy
it (it should cost the equivalent of one hour's labour...) and do it
yourself. You then have the added advantage that you can do it again if need
be AND, you can charge other unsuspecting S70/V70/C70 owners to do it for
them!
Great!
J