hey deepak.......well in that case,.....y dont u go to the console where u have created this role and added users to it.........there also u have a search filter there.......how about searching it from there............even there if u cant find it..........do one thing,.,.,.,.,.,.
delete what u have done.........go step by step........
go to the root hierrachy.rt click and say....create new organizational unit.....
create ur ou=roles there
then go about and add ur users into it..........
after doing this........apart from ou=People,ou=Special users and ou=Groups....u shud c the ou=Roles which u created also.........
then tat means things r fine.
anyway.....my gmail id is.
ratnashilpa@gmail.com(i login to msn using this acct)