[求助].net网站发布问题

错误提示:
server error in'/zy' Application
configuration Error
paser Error Message:Could not load filr or assembly 'ADODB,version=7.0.3300.0 Culture=neutral,PublickeyToken=bo3f5f711d50a3a'or one of its dependencies.系统找不到指定的文件

求救是怎么回事啊