1) Replace "insert" with "include_once"
2) Is $con valid? ie: Have you actually connected to a mysql server?
3) You haven't set the $srch variable
4) You have a ')' at the end of the SQL string.
5) $query is not valid. You haven't called $query = mysql_query($sql).
6) $Telephone and $telephone are different variables.
7) You havent set $comment
8) You have "} else { echo "problems...."; } else {" yet, only one level of if. For each "if" statement, you can only have one "else"
Im unsure whats in 'dbconn.php' but, you need to make sure you have a valid mysql connection before you can assume you can connect to a database.
You need to learn to step though your code and verbose error messages. Just because you have a pile of code doesn't mean its going to work as one.
Step though your code one line at a time a validate all your assumptions.
ie: If you beleive a line of code is working, then prove it to yourself. Otherwise you can overlook the most simplest bugs.