Many thanks for your response: Sorry about posting the problem so many times. The problem still remains, i am a complete beginner and everything is greek to me.

Already changed the following in the config table to:
serendipityPath: /public_html/blogweb/
serendipityHTTPPath: /mywebsitename.com/blogweb/
baseURL: http://mywebsitename.com/blogweb/

Still kicking me out if i click on any option + giving me the following error:

Warning: Smarty error: unable to ...

Verify Installation Integrity
htmlarea/plugins/HtmlTidy/html-tidy-config.cfg corrupt or modified: failed verification
htmlarea/plugins/PreserveScripts/php.svg corrupt or modified: failed verification
htmlarea/plugins/SpellChecker/spell-check-logic.cgi corrupt or modified: failed verification

Its now giving me the following error

Warning: Smarty error: unable to read resource: "404.tpl" in /home/brainsu1/public_html/blogweb/bundled-libs/Smarty/libs/Smarty.class.php on line 1092

Please also tell me how to add a forum to my website like the one in the Serendipity website.

Many many ...

OK, i did read thru some of the other forums and found the answer, there was a space in the local_config file, which i removed, the warnings are all gone, but after i login to the ADMIN, it doesnt show any graphics, just basic text, and still it kicks me out as soon as i click on any of the menu ...

Sorry to bother you but one more thing: when it does login, it shows up sort of very basic without graphics and when you click on any option, it automatically logs out.

Also gives me the following error:

Warning: Smarty error: unable to read resource: "404.tpl" in /home/brainsu1/public_html/blogweb/bundled-libs/Smarty/libs/Smarty.class.php on line 1092

I corrected the config_local file again and am now able to login into the admin, however at the top it still gives me the following errors:

Warning: Cannot modify header information - headers already sent by (output started at /home/brainsu1/public_html/blogweb/serendipity_config_local.inc.php:20 ...

Many thanks for your help...the serendipity_config_local.inc.php was empty: i have modified it as follows

<?php
/*
Serendipity configuration file
Written on Tue, 09 Dec 2008 11:38:13 +0100
*/

$serendipity['versionInstalled'] = '1.4-beta2';
$serendipity['dbName'] = 'db';
$serendipity ...

I tried unzipping from fresh and overwriting the files again: Now, i'm getting following errors:
Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'root'@'localhost' (using password: NO) in /home/brainsu1/public_html/blogweb/include/db/mysql.inc.php on line 270

Warning ...

I upgraded to 1.4 from 1.3: i am using RVSiteBuilder and JustHost's automated BLOG call system to Serendipity: after overwriting all files i get following error I did not overwrite serendipity_local.inc.php file as instructed and i could not find any .htaccess file to overwrite. After overwriting ...