First I could not set the FTP parameter so missed that step. I completed another parts after which on getting removed cellular phone directory the Joomla link would go to an empty page. This is actually the output

wget mydomain.com/joomla
--2010-11-02 05:02:23--  http://mydomain.com/joomla
Resolving mydomain.com... 68.178.227...
Connecting to mydomain.com|68.178.227...|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://mydomain.com/joomla/ [following]
--2010-11-02 05:02:23--  http://mydomain.com/joomla/
Connecting to mydomain.com|68.178.227...|:80... connected.
HTTP request sent, awaiting response... 500 Internal Server Error
2010-11-02 05:02:24 ERROR 500: Internal Server Error.

Are you able to recommend what direction to go and trobleshoot and fix? Which logfile must i try looking in?

Begin by searching within the apache error log to determine exactly what the 500 internal server error means.

Usually this really is in /var/log/http/errors or somewhere close but under /var/log a minimum of.

Use tail <filename> directly after you have the mistake message from wget and appearance the final lines of output, which should give some clues.