Simple fix needed.

Hello, I have a url like this - [login to view URL] What happens is, when user visit this url, user gets to download a rar file named [login to view URL] There is only 1 rar file on the host but it gets different name according to the name in the url, I build this script sometime ago, now I want something fix. I want to block specific name, suppose someone visit [login to view URL], instead of user getting to download a rar file named [login to view URL], I want it to show blank page and not a download prompt. What I have tried is, creating a folder naming it [login to view URL] but when I go to the url, it still downloads the file. I want to block specific name, need a script or solution to solve this. This is very simple work for someone who knows. Have low budget and need it asap. Thanks