Windows and Linux

Hi everyone, I built a small requirement using PHP and mySQL and using Win'98 and PWS as my production server. I followed the default instructions in setting this up. After the phase was completed we copied the site and the db script on a Linux machine with Apache Web Server. However some of our mySQL code is not working. Are there any known issues and differences while porting ? I get errors like: Warning: Supplied argument is not a valid MySQL result resource in /usr/local/etc/httpd/htdocs/shrunkenplanet/demo/content/index.php on line 12 line 12 has the following code: $row_array = mysql_fetch_row($rsRef); I know my connection to the db is being established. Command like $rsRef = mysql_query($Query); are working (since they occur before mysql_fetch_row() Can anybody point me in the right direction. I am at my wit end trying to figure this out. Unfortunatly I have absolutly no knowledge of Linux and Apache. I guess it as to do with the mySQL library installed or some configuration settings ? Any help will be really appreciated. TIA -Mujahid