i have set up a debian LAMP server. I have currently loaded two Joomla websites on it.

I tried to change the /etc/apache2/sites-available/default and set up two 'virtualhosts'
once all was said and done - i am no longer able access my web pages through a web browser from any other workstation.
When I look through the error log for apache2, i see the problem is because i am being routed to:
/var/www/joomla/joomla/ - and my web page is located in /var/www/joomla/
obviously my browser won't find its way if it is led down the wrong path.

how can i fix this?

here is my /etc/apache2/sites-available/default config file

NameVirtualHost *
<VirtualHost *>
ServerAdmin myname@mydomain.ca
ServerName www.mydomain.ca
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
# This directive allows us to have apache2's default start pag

# in /apache2-default/, but still have / go to the right place
#RedirectMatch ^/$ /apache2-default/

</Directory>

ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>

ErrorLog /var/log/apache2/error.log

# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn

CustomLog /var/log/apache2/access.log combined
ServerSignature On

Alias /doc/ "/usr/share/doc/"
<Directory "/usr/share/doc/">
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
Allow from 127.0.0.0/255.0.0.0 ::1/128
</Directory>