asp.net 和 window server空間的問題!!

請各位高手解答=]
我用Visual C#寫左一個asp.net 出黎...係asp2.0黎既...
我租左個window server空間放衣個asp.net落去....
但係呢...我放左入去之後佢彈error：

Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".

究竟點搞好><thx!