error when installing

WordPress database error Table ‘rentengdb.wp_options’ doesn’t exist for query INSERT INTO wp_options (option_name, option_value, autoload) VALUES (‘cron’, ‘a:2:{i:1221323278;a:1:{s:17:\”wp_update_plugins\”;a:1:{s:32:\”40cd750bba9870f18aada2478b24840a\”;a:3:{s:8:\”schedule\”;s:10:\”twicedaily\”;s:4:\”args\”;a:0:{}s:8:\”interval\”;i:43200;}}}s:7:\”version\”;i:2;}’, ‘yes’) made by add_option WordPress database error Table ‘rentengdb.wp_options’ doesn’t exist for query INSERT INTO wp_options (option_name, option_value, autoload) VALUES (‘auth_salt’, ‘euQfmvvz%DQH’, ‘yes’) made by add_option

I am sure that the database name and user/passwd is correct, also is permissions. I try it at a bussiness server, it is no problem. But my server report this msg, the server configure by windows 2008 + iis7 + mysql5 + php5 + wordpress 2.6.2

Please help me,thanks in advance:)