Eric thanks for your reply. However, thats not what I was looking for. Probably, I was not clear in my explanation.
Say, there is a multiselect control box BOX_1 with values
There is another BOX_2 and is empty for now.
There are push arrows between these two.. Now, I can push say "Beta" and "Gamma" from BOX_1 to BOX_2. Thereafter, "Beta" and "Gamma" will show up in BOX_2 and will go away from BOX_1. So, in my case, "Beta" and "Gamma" have been selected by user.
Additionally, I also want "up" and "down" arrow near BOX_2 so that I can change the order of "Beta" and "Gamma".