[Haskell-beginners] run another program from within haskell program

i have downloaded data from postgresql into a file my haskell program. i can of course edit this file with say vim. can i run vim on that file from within haskell and after quiting vim have control returned to my haskell program? the situation is like calling vim to edit my claws-mail emails instead of using the native editor. after editing, i quit the external editor and am returned to the native editor. -- In friendship, prad ... with you on your journey Towards Freedom http://www.towardsfreedom.com (website) Information, Inspiration, Imagination - truly a site for soaring I's