Source patches are available to upgrade X11R6.3 PL2 from the X Consortium (now The Open Group) to XFree86 3.3.6. Binaries for many OSs are also available. The distribution is available from:
and the following mirror sites:
Ensure that you are getting XFree86 3.3.6 - some of these sites may archive older releases as well. Check the RELNOTES to find which files you need to take from the archive.
$XFree86: xc/programs/Xserver/hw/xfree86/doc/sgml/README.sgml,v 126.96.36.199 1999/10/13 21:46:26 hohndel Exp $ $XConsortium: README.sgml /main/31 1996/10/28 05:43:24 kaleb $