While downloading and installing software from the internet, users should exercise caution to avoid malware and other security threats. Here are some guidelines:
: This likely refers to a specific file named "setup.rar", which is a compressed archive file. RAR is a proprietary archive file format. http www51scopecn files setuprar install
http://www.51scope.cn/files/setup.rar (or similar) — but note the spaces instead of dots/slashes in your text. While downloading and installing software from the internet,