CRM Vtiger customize

I need a simple CRM. This is for a client. I saw the free vTiger. I need to customize. Change logos, links, product name. I want a free CRM in 2 languages. Greek and english. The CRM must have: Management of contacts Possibility of registration of companies with the following elements: • Possibility of registration individual with the following elements: • Possibility of integration in categories • Lists of contacts • Complete background of communication of contacts. • System of safety • Timing with MS-Outlook • Help Desk No mislestone.