how-to block ads
First you need to download the Greasemonkey script that you would like to use in Opera. You may need to rename that script so that the file ends with user.js if that is not already the case.
Opera needs to be restarted so that the scripts can be loaded once the folder has been selected. After that its just a matter of testing the scripts on whatever website they are working on.
Credit to Martin / »www.ghacks.net/2008/08/10/grease···n-opera/