Extracting values from a vector

[François-Léonce Charron <fcharron@nbnet.nb.ca>]

Hello all !

	Is there an easy way to extract one of every different value from a 
vector. This example might explain better:
original vector
1,2,4,2,5,2,1,1,1,6

new vector
1,2,4,5,6

I'm actually working with character values (country names) but I assume the 
process would be the same
Thanks !
François-Léonce Charron