Cultivated marble vanity top

[FONT="Book Antiqua"]I successfully replaced one kitchen faucet and one bathroom faucet, but on the second bathroom faucet I somehow managed to crack the hot water supply tubing (not sure if that is the correct name). It is the flexible metal tubing that runs friom the shut off valve under the sink to the faucet. I think I can replace it, however I need to some how take off the shut off valve. There is a screw in the center of it, but I am not sure if water will come shooting out of the wall if I try to take it off?? Is it safe to remove this part?? thank-you for your help! sabrina.[/FONT]

I have somehow gotten a very tiny/short slit like puncture thru the rear of my NEW dishwasher. It is probably not more than 1/8" long. The rear is plastic and so is the outside where it went thru. It is leaking water when in use that is bad enough to come onto the floor in front of the dishwasher. What can I use to seal the leak on the inside and the outside plastic panels and how do I apply it? Thanks, Laurie