The
uname -a command will only tell you what OS you currently have on your system.
To tell what kind of hardware your system is running you need to use:
and look for the "Model Name" line for the type processor you are using. Chances are that you can always use the 32 bit version. This will let you know if you can use the 64 bit.
If this does not give you the answer try:
Code:
cat /etc/redhat-release