I got in my car this morning to go to work and turned on the blower to clear
the windscreen. After a while I realised that while the blower was working
that there was no heat coming through. After work driving home the needle on
the temparture gauge went to the far right, I stopped the car at a garage
and waited for things to cool down, I added some water to the radiator, I
was surprised that it only took half a litre or so. When I got back in the
car I found that the heater worked this time. I noticed when I got out of
the car that there was water dripping from underneath the car - this seems
to originate from the timing belt area.

Is this the water pump? Can I drive my car? Is changing a water pump a job
for an expert? I'm reasonably compentent with a spanner - is there somewhere
that shows me how to do it (other than a Hayners manual)?

Thanks

Nadeem