Manego store needs error fixing

Hello, I have few little things to be fixed on our magento store which I will list here. Also we are looking for some who could work with us on permanent bases but whenever we need something. For this time I need following: 1. Remove magento link from the footer 2. Website to support all browsers and there is a loading issue. 3. Enable printing option (I have enabled by doing the following: Navigated to the "errors" folder. Change [login to view URL] to [login to view URL] changed in magento/lib/Zend/Cache/Backend/[login to view URL] : protected $_options = array( 'cache_dir' => 'null', Change it to: protected $_options = array( 'cache_dir' => 'tmp/', And created empty tmp folder however, after doing this it is coming up with whole bunch of errors. Web address is www.dress-room.eu. there will be more things to fix and create however this three are urgent matters.