g'day wanda,

have youtaken the brass/chrome dress bit off first this is in place
the cover the hole formed to allow the tap to stick though the wall.
this screws on generally in the same direction as the nut that holds
the tap knob on?

once this si removed you can then see the tap proper should look
similar to your outside brass tap at this point, now some taps are
extended for the depth of wall cavity so ones you remove that bit that
hold the tap knob spindle you may need and extended socket or tube
spanner to reach the other bit, i use a spark plug socket in the one
house i owned.

a little tip at the pouint of disassembley don't just replace the tap
washer there is a red (usualy) coloured fibre washer that it is best
to replace remove all the remains of the old washe first, this quiet
often can leak after reassembly if not replaced not good to have in
the wall cavity.

also while the tap is apart srew out the spindle ad replace the rubber
'o' ring as well.

once you do it once you will never forget it, depending on the age of
the shower unit you may have to inspect the seat for any damage you
can either buy a tool to recut the seat or buy stainless steel seats
and tool to push them in with the later is the best i reckon. best
washers to use are those brass ones with the rubber 'o' ring they are
dearer but worth it, the ones i have are called hydroseal.

hope this helps?

len

snipped
--
happy gardening
'it works for me it could work for you,'

"in the end ya' gotta do what ya' gotta do" but consider others and the environment
http://members.optusnet.com.au/~gardenlen1/