Hello, I am using gcc compiler version 3.3.3 I would like to know whether the binaries compiled on AMD64 Opteron will work on EM64T Xeon and vice a versa ? Also I would like to know whether the 32 bit binaries will run as it is on 64 bit platforms ? Any quick reply will be appreciated. Thank you. Shailesh __________________________________ Start your day with Yahoo! - Make it your home page! http://www.yahoo.com/r/hs