Fixes and improvements for MS-Windows build.
diff --git a/runtime/doc/if_perl.txt b/runtime/doc/if_perl.txt
index 9f87e41..6ff56d8 100644
--- a/runtime/doc/if_perl.txt
+++ b/runtime/doc/if_perl.txt
@@ -272,11 +272,16 @@
you don't use the Perl interface you don't need it, thus you can use Vim
without this DLL file.
-To use the Perl interface the Perl DLL must be in your search path. In a
-console window type "path" to see what directories are used.
+You can download Perl from http://www.perl.org. The one from ActiveState was
+used for building Vim.
+
+To use the Perl interface the Perl DLL must be in your search path.
+If Vim reports it cannot find the perl512.dll, make sure your $PATH includes
+the directory where it is localted. The Perl installer normally does that.
+In a console window type "path" to see what directories are used.
The name of the DLL must match the Perl version Vim was compiled with.
-Currently the name is "perl58.dll". That is for Perl 5.8. To know for
+Currently the name is "perl512.dll". That is for Perl 5.12. To know for
sure edit "gvim.exe" and search for "perl\d*.dll\c".
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