There are many post with such as information, try to use search. Or just look through to 1,2,3 pages at Digital Point Forums > Marketing > Link Development
Directories that instantly approved the site are not good directories because they don't review the site before adding the site.
Good friend you can try out this "http://forums.digitalpoint.com/showthread.php?t=1020701" Lots of free directories are there
Here's a list of web directories. Use the search on the site to narrow the list to sites that approve fast, have good PR, are free, etc.
This is not a recommended way of getting back links. these sites are usually off topic, and don't pertain to what your site is about.
My recient post, Link building with se friendly directories, contains links to some great directory lists, and also some tips on submitting them. Don't want to seem like I am promoting my own blog too much in these forums, but I really think you might find it useful.