WordPress MU

can someone explain this problem?

/home/fearless/public_html/wpmu : FAILED
Quick Fix: chmod 777 /home/fearless/public_html/wpmu
/home/fearless/public_html/wpmu/wp-inst : FAILED
Quick Fix: chmod 777 /home/fearless/public_html/wpmu/wp-inst
/home/fearless/public_html/wpmu/wp-inst/wp-content/ : FAILED
Quick Fix: chmod 777 /home/fearless/public_html/wpmu/wp-inst/wp-content/

Warning!
One or more of the above directories must be made writeable by the webserver.
Please chmod 777 directory-name or chown that directory to the user the web server runs as (usually nobody, apache, or www-data)
Refresh this page when you're done!

olso explain this

Connection Strings
Perl $dbh = DBI->connect("DBI:mysql:fearless_wpmu:localhost","fearless_wpmu","<PASSWORD HERE>");
PHP $dbh=mysql_connect ("localhost", "fearless_wpmu", "<PASSWORD HERE>") or die ('I cannot connect to the database because: ' . mysql_error());
mysql_select_db ("fearless_wpmu");

Please help someone

Please chmod directory

Chmod your directory. you can do a search on google for this for more info, and looking in your ftp client's help documentation would probably explain clearly.

The basics are:

When you are in your ftp program, there is a way to change the permission of a directory. Usually, you can right-click on the folder icon, and then go to properties/chmod. Under properties at the bottom is three lists: "Owners", "Group", "Public". and under each is "Read", "Write", "Execute". Make sure that each is checked on all three groups. or if there is only a box with a three-digit number in it, possibly labeled "Permissions", make sure that it says "777".

Do this on all the directories that are listed in the warning.