How install the Italian translation

I've installed opencart 0.7.7 on my dreamhost, now I would like to instal the italian translation

http://forum.opencart.com/index.php/topic,295.0.html

please can someone help me telling me how to do.

Best regards
fede

Firstly, Upload the files contained within the zip file to your opencart install using your favourite FTP client.. (just upload the admin and catalog folder, clicking yes to overwrite them. You will not delete any files, just add the ones that are not already there.)

Now go to www.yourdoain.com/admin or www.yourdomain.com/store/admin (where store is the folder open cart is installed in).

Login and in the top menu go to Admin -> Configuration -> Localization -> Languages.

Now set th e Italian language as your default and you are done.

-Dave

daer Dave, thanks but I did a disaster!   

I do upload as you tell but then wen try to login it say "....../catalog/language/english/english.php not found!"

so I've re uploadede the original folders an now it say:



Notice: Use of undefined constant DIR_LIBRARY - assumed 'DIR_LIBRARY' in ...../ecommerce/admin/index.php on line 19

Warning: require(DIR_LIBRARYlocator.php) [function.require]: failed to open stream: No such file or directory in ...../ecommerce/admin/index.php on line 19

Fatal error: require() [function.require]: Failed opening required 'DIR_LIBRARYlocator.php' (include_path='.:/usr/local/php5/lib/php:/usr/local/lib/php') in ...../ecommerce/admin/index.php on line 19




it is better re install everythigs I guess!? 

If you would like to PM me your details, i'll upload and install OpenCart with the Italian language added for you free of charge..

I will need FTP, cPanel and domain name details to accomplish this, it would be best to change your current password to a temporary one prior to providing me these details and then change it back after I have installed it all..

-Dave

Dear Dave!                    DONE! DONE! DONE!
thank you so much for your kindness so appriciate.
by the way the problem whas that no italian "tab" it is allready avaleable to edit  but you must to create it before to be able to choose it!
great! thanks again
fede