easy. take off the top cover and from the front of the machine look down at the drum. just below and to the left of the big silver foil coated thing is a screw attached to a long wire...this is the fixing to the rear seal. undo this until it is loose and floppy.
open the washer door and look under the front seal by the hinge. hopefully you'll see a spring clip holding the front seal wire in place....simply detach it.
the vent at the top will just pull away releasing another spring retainer.
it will all become clear as you do it. give the whole seal a tug and it will come free with some limescale!
fitting it back is the same in reverse, just slightly more frustrating!
mrdudsir
September 2005