For IIS Windows servers you probably need to have compiler “nmake.exe” 64bit version. If you are running plesk you will find a copy on C:\plesk \…..\…\.\nmake.exe copy this file to C:\Windows. If the “nmake.exe” is not there simply use search on drive C:\ and you may be lucky to find it somewhere, or as other people suggest you can download and install MS Visual Studio, the nmake.exe will be there so search for it. Then you can use CPAN and it will download source, compile and install MIME lite for you. To do this use command prompt: perl -MCPAN -e shell ENTER cpan> install MIME::Lite ENTER there will be few dependancies to install as well, for these few questions the default answer is set to “yes” so all you need to do is click ENTER few times and you are done. cpan> exit ENTER close command prompt window.