Reading Webpage with arduino uno

Folks, I want to use my arduino with ethernet shield to access the following webpage "http://www.met.ie/forecasts/sea-area.asp" and take some information.

On the website it has a line "Small Craft Warning"- This is always either "In Operation" or "Nil".

Basically i want to hook up a RGB LED to the duino and if "Small Craft Warning" is "in Operation" i want LED to be Red, and if "Nil" LED can be green.

My issue is i cant figure out hot to go about getting the information from the webpage.- Can the arduino read this directly?

I am confident with arduino but this is my first web based project!

Any Tips or advice would be savage helpful Thanks