Fatal Error Code

How do I get rid of this error and re-install w3 total cache without it wiping out my entire site?

Fatal error: Call to undefined function apc_fetch() in /home/socially/public_html/wp-content/plugins/w3-total-cache/lib/W3/Cache/Apc.php on line 171

http://ww.wp.xz.cn/plugins/w3-total-cache/