General comment for all of your code: You need to find a consistent style of whitespace/indentation that suits you best and stick with it...
im p r o per l y sp a c e d c o d ei s h a rdt o re ad! !!
Next problem comes with this section of code:
// Check if button name "Submit" is active, do this
if($Submit){
for($i=0;$i<$count;$i++)
{
$sql1="UPDATE Prod SET model='$model[$i]', name='$name[$i]' , description='$description[$i]' , length_oa='$length_oa[$i]' , length_blade='$length_blade[$i]' , blade_spine='$blade_spine[$i]' , length_handle='$length_handle[$i]' , weight='$weight[$i]' , steel='$steel[$i]' , status='$status[$i]' WHERE id='$id[$i]' ";
$result1=mysql_query($sql1);
}
}
Where do you ever define the variables $Submit, $model, $name, ... etc. (basically $Submit plus every variable that appears inside of the definition of the $sql1 variable) ? As far as I can see, all of those variables are undefined (hence the first error message).
Finally, this:
if($result1)
{
mysql_close();
{header("location:forumquestion.php");}
}
doesn't make sense unless it appears within the block of code that checks if the form was submitted. Otherwise, $result1 won't be defined (hence the second error message).