updated for version 7.3.460
Problem:    Win32: UPX does not compress 64 bit binaries.
Solution:   Mention and add the alternative: mpress. (Dave Bodenstab)
diff --git a/src/INSTALLpc.txt b/src/INSTALLpc.txt
index ec358e0..66f102d 100644
--- a/src/INSTALLpc.txt
+++ b/src/INSTALLpc.txt
@@ -239,6 +239,12 @@
 found at
     http://www.upx.org/
 
+As of 2011, UPX still does not support compressing 64-bit EXE's; if you have
+built a 64-bit vim then an alternative to UPX is 'MPRESS'. MPRESS can be found
+at:
+    http://www.matcode.com/mpress.htm
+
+
 ADDITION: NLS support with MinGW
 
 (by Eduardo F. Amatria <eferna1@platea.pntic.mec.es>)