Ok, so I made the small change to the new auth.net ssl3 module. Just to verify:
You need to "Add" this line or "change" the variable in the existing line from "$curl" to "$ch"
To fix authorizenet_cc_aim.php, it looks like all you have to do is find this (around line 342):
curl_setopt($curl, CURLOPT_HEADER, 0);
and insert the following as a new line below that:
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
----When I change to the line you have above and run a transaction, this is the error I get------------
Warning: curl_setopt(): supplied argument is not a valid cURL handle resource in cart/includes/modules/payment/authorizenet_cc_aim.php on line 343
Warning: Cannot modify header information - headers already sent by (output started at public_html/cart/includes/modules/payment/authorizenet_cc_aim.php:343) in public_html/cart/includes/functions/general.php on line 33
Any suggestions?