Directory submission software

i want to post my article content on top 50 directories.so generate huge amounts of backlinks.
what should i do for that?/????
i have searched in google many softwares available that automatically submit your website content one by one to all the article directories
anyone have used that type of softwares

i have heard names of
bookmarkwiz
article submiiter

and many other else

i want to submit my article in less time,i want to save time and my cost too.i know its cannot be done manually because it takes 2 hours to submit 1 article in just 10 or 20 directories.with the help of software anyone can do it automatically and with least time...some companies offered per month charges and online submitting automatically.....
please guide me the best solution of that......

any software cracked available that can do this task.........
i have heard in google..many software are available that are making fool people and they in reality dont send your post to the article directories but in your PC they shown you that they have submitted your articles to at-most all directories.......
what should i do.........
please list down the good softwares for that free or paid one
but that must be credible not fake softwares .......
i want to save my time and money too
i did not have enough time to do it manually........

kindly plz let me know
which software have you used for article submission in to top articles directories...which is the best software for that work.....
an early reply will be highly appreciated....