removing an error on Joomla Based website

*PROJECT DETAILS* please write back to get more details on a simple error removal on the front page of Joomal based website. [login to view URL] The Error is as per following. DB function failed with error number 1030 Got error 127 from storage engine SQL=SELECT guest, usertype, client_id FROM jos_session WHERE client_id = 0 Also following new enhancements are required 1) Upgradation on Joomla 2.5 from whatever version it is on . 2) URL Corrections, and SEO Settings for major content pages 3) Optimised Data Input Sequences for Downloads section 4) Overall "Cleaning" of Website Pages and the Front Page 5) Rotating "Product of the Week Section" on the Front Page Regards, Mahesh