Warning: Cannot modify header information - headers already sent by (output started at /home2/rahulke/public_html/config.php:657) in /home2/rahulke/public_html/system/lib-sessions.php on line 185

Warning: Cannot modify header information - headers already sent by (output started at /home2/rahulke/public_html/config.php:657) in /home2/rahulke/public_html/system/lib-sessions.php on line 197
An SQL error has occured. Please see error.log for details.

i dont know where the error is coming from. I have chmoded all the files which installation thing said (i also tried chmoding lib sessions...but there was no change so i changed it back..please help me :O)

Read carefully the warning message.
A hint:

Most probably there is a whitespace at the end of config.php. Remove it. Should help.
BTW
There are already more than 30 posts regarding this issue. Next time do the file edition more carefully

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Geeklog Polish Support Team