Which algo?

I''m currently working on a program that needs to run through a large list of strings and and copy them to another array (excluding the duplicates).. Like so: (First array) "Test1", "Test1", "Test2", "Test3", "Test3" would be "Test1", "Test2", "Test3", I''m basically doing it this way: Read first time loop to end of array is it the same as previous item? just continue different? copy to second array This works fine except i''m working on a Palm handheld. So.... when I have an array of say... 300 numbers it gets a little slow. Does anyone know a better algorithm - even if it''s just the name, I''ll look it up Thanks! ~Shaun Patterson