i have a very big problem with my wordpress multisite. first of all it has been hacked and i find it difficult tracing which files to edit to make the necessary changes. My main homepage has been affected, links to other websites, created and i find nothing in my index.php. Secondly, i want to upgrade the site but the issue is the site was some how tweaked during the building process. can someone please help me with how best i can upgrade the multisite from 3.0.1 to 3.7.1 and also with the hacked issues. Thank you very much and hoping to hear from you.