Wnaspi32.dll is a special system file for use with CD and DVD software. You may need this file if it was not included with your programs and they respond with "wnaspi32.dll not found" or a similar error message. It is only for use on Windows NT, Windows 2000, and Windows XP but ***NOT for Win98***. It requires an administrative account. Installation instructions are included after purchase... FrontBack LLC :: wnaspi32 :: dll :: for :: 1 :: user :: frontback :: llc :: utilities :: system :: utilities :: wnaspi32 dll(for1user) :: Wnaspi32 dll (for 1 user)