helpfully

from WordNet (r) 3.0 (2006)

helpfully
    adv 1: in a helpful manner; "the subtitles are helpfully
           conveyed" [ant: {unhelpfully}]

from The Collaborative International Dictionary of English v.0.48

Helpful \Help"ful\, a.
   Furnishing help; giving aid; assistant; useful; salutary.
   [1913 Webster]

         Heavens make our presence and our practices
         Pleasant and helpful to him!             --Shak.
   -- {Help"ful*ly}, adv. -- {Help"ful*ness}, n. --Milton.
   [1913 Webster]