This works great on create account, but didn't work on contact us, however, I believe this is the answer (it works for me)

The contribution below must be installed first (up to and including marcinmf's "Better Image" file.


BACK UP BACK UP BACK UP your files & db

in catalogue > contact_us.php find (about line 31):

//VISUAL VERIFY CODE start
require(DIR_WS_FUNCTIONS . 'visual_verify_code.php');

$code_query = tep_db_query("select code from visual_verify_code where oscsid = '" . tep_session_id($HTTP_GET_VARS[tep_session_name()]) . "'");
$code_array = tep_db_fetch_array($code_query);
$code = $code_array['code'];

tep_db_query("DELETE FROM " . TABLE_VISUAL_VERIFY_CODE . " WHERE oscsid='" . $vvcode_oscsid . "'"); //remove the visual verify code associated with this session to clean database and ensure new results

$user_entered_code = $HTTP_POST_VARS['visual_verify_code'];
if (!(strcasecmp($user_entered_code, $code) == 0)) { //make the check case insensitive
$error = true;
$messageStack->add('contact', VISUAL_VERIFY_CODE_ENTRY_ERROR);
}
//VISUAL VERIFY CODE stop


REPLACE with:


//VISUAL VERIFY CODE start
require(DIR_WS_FUNCTIONS . 'visual_verify_code.php');

$code_query = tep_db_query("select code from visual_verify_code where oscsid = '" . $HTTP_GET_VARS['osCsid'] . "'");
$code_array = tep_db_fetch_array($code_query);
$code = $code_array['code'];

tep_db_query("DELETE FROM " . TABLE_VISUAL_VERIFY_CODE . " WHERE oscsid='" . $vvcode_oscsid . "'"); //remove the visual verify code associated with this session to clean database and ensure new results

$user_entered_code = $HTTP_POST_VARS['visual_verify_code'];
if (!(strcasecmp($user_entered_code, $code) == 0)) { //make the check case insensitive
$error = true;
$messageStack->add('contact', VISUAL_VERIFY_CODE_ENTRY_ERROR);
}
//VISUAL VERIFY CODE stop


Hope it works for you
Good Luck


NB file attached is just the above



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