diff --git a/README b/README
index 01d2c2ccf..8d47aca69 100644
--- a/README
+++ b/README
@@ -81,14 +81,15 @@ build/debug or build/optimized.
 
 The current codebase is expected to build and run on the
 following set of platforms:
-  - linux x86 gcc 4.2, 4.1, and, 3.4.
-  - linux x86_64 gcc 4.0
+  - linux x86 gcc 4.2, 4.1, and, 3.4.6.
+  - linux x86_64 gcc 4.1.3, 4.2.1, 3.4.6
   - MacOS X ppc and x86
-  - cygwin
+  - cygwin gcc 3.4.4 (debug only)
 
 The current codebase is expected to fail to build on
 the following platforms:
   - gcc 3.3 and earlier
+  - optimized builds on gcc 3.4.4 and 3.4.5
   - optimized builds on linux x86 gcc 4.0 
 
 Other platforms may or may not work: we welcome 
@@ -102,11 +103,11 @@ On recent Linux systems, once you have built ns-3, it
 should be easy to run the sample programs with the
 following command:
 
-./waf --run simple-point-to-point
+./waf --run simple-global-routing
 
-That program should generate a simple-point-to-point.tr text 
-trace file and a set of simple-point-to-point-xx-xx.pcap binary
-pcap trace files, which can be read by tcpdump.
+That program should generate a simple-global-routing.tr text 
+trace file and a set of simple-global-routing-xx-xx.pcap binary
+pcap trace files, which can be read by tcpdump -tt -r filename.pcap
 
 5) Getting access to the ns-3 documentation
 -------------------------------------------