if you are on BIS then what you are asking for cannot be done.
If you are on BES then yes this can be achieved and your BES Adminstrator(IT) will set the policy/permission for you to have the facility. Mind you this is only restricted to the email that he /she can controll(namely your exchange/work emails). If you have emails like hotmail/yahoo setup on the BB you cannot get the folder options irrespective of you being on BIS/BES.
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Amod Wadhi Blackberry Support Specialist http://chumedh.com No more outsmarting smartphones!!...We will fix it!