(If what you want is an interface to X Windows for GCL, that is here.) For a complete installation of Gnu Common Lisp get gcl-2.6.1.exe (15 MB download, 60 MB to install). Unfortunately, at present this version of GCL produces a ^M (Return) character at the end of each line when used within Emacs. For convenience, a version of GCL for Windows, renamed gcl.exe, is available for download here (3.4 M