On Sat, 20 Mar 2010 18:45:11 -0400, willshak
wrote:

Depending upon the age of the valves, you may find that they still leak
after shutting them off. This is because the gaskets have hardened and
do not seal completely.
Keep a bucket handy.

If the valves need replacing, pick a 1/4 turn ball-valve as the
replacement type.