Help with an inherited pond

Hi

I have recently moved into a new house with a fish pond in the garden but
have no idea about how to keep the fish healthy and living.
Could anyone here give me some advice on what would be right for my fish,
what is wrong/right with the pond and any other ideas ect that might be
useful.

A few questions I also have a

What is the easiest way to clean the pond without taking out the fish ?
What plants are best to have?
How often should I be feeding the fish?

Photos of my pond are on this site
http://www.geocities.com/me_pigley/photopagefish.html


Many thanks in advance

Cheryl in the UK