Substring RegExp Extract path

Hi,

I'm trying to extract element of a directory path stored in the db with substring

"/help/support/index/time.jsp"

and i want to extract the 1st, 2nd and 3rd parts

1st = help, 2nd = support, 3rd = index

but I can't get the regular expressions correct.

Any ideas on what I need to do.

select substring(data,'????') from paths

TIA