Added uninstall hints.

diff --git a/README b/README
index f427584..833c430 100644
--- a/README
+++ b/README
@@ -124,6 +124,10 @@
 will install the wine executable, the Wine man page, and a few other
 needed files.
 
+Don't forget to uninstall any conflicting previous Wine installation
+first.  Try either "dpkg -r wine" or "rpm -e wine" or "make uninstall"
+before installing.
+
 If you want to build the documentation, you can run "make" in the
 documentation directory.