The ARexx scripts and the configuration file FontVols for font caching are automatically installed by the file `callmf.ins' coming with this distribution. All you have to do is `execute' the shell script. Do not install CallMF 2.0 simply as an update in your existing system, if you do not intend to switch to TEX Directory Structure (TDS)TEX Directory Structure (TDS)TDSTDSTDS.