Strings...

I am wondering how to add a string to the string rescources in res edit.
For instance, i want to add another ship class to that string, but when i go up to "insert new rescource (command k)" it is not black, but grey so i cannot do that command. Any help?

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Admiral Zombat
http://www.cerolia.pyar.com

"Gug ug hu-uuggug agg ackug-glub"
("you backstabbing turncoat!")

Below the string, there is a number with some stars (I think). Click on that, and a box will appear. Now press command K.

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EV Haiku- by Matt Burch

Floating chunks of rock
Space bomb drops too soon- kaboom
time for escape pod