CrunchBang 10 “Statler” is available for both i386 and AMD64 architectures. You can download “Statler” from here: http://crunchbang.org/download/ A description of each follows:
The development release Crunchbang 11 “Waldorf” is based on Debian testing. You can download “Waldorf” from here: http://crunchbang.org/download/testing/
If you are unsure which version to download, ask on the forums.