The businesscard image will not be available in wheezy. Here are before and after patches. I do not know if the URL for the mini.iso is the best one.
Regards, Brian.
--- index.wml 2012-08-28 18:35:03.459155255 +0100 +++ index-unstable-images-squeeze.wml 2012-08-28 18:39:44.000000000 +0100 @@ -357,7 +357,7 @@ <q>testing</q> system first and only to install most of the software (e.g. desktop environment) after the switch to <q>unstable</q>.</li> - <li>Use the <a href="../netinst/">business card image</a>. Boot from + <li>Use the <a href="../netinst/">business card image</a> or the <a href="http://ftp.nl.debian.org/debian/dists/stable/main/installer-i386/current/images/netboot/";>netboot mini ISO</a>. Boot from it in expert mode or with <tt>priority=medium</tt>. You will then be able to select the distribution (stable/testing/unstable) during mirror selection.</li>
--- index.wml 2012-08-28 18:35:03.459155255 +0100 +++ index-unstable-images-wheezy.wml 2012-08-28 18:50:13.000000000 +0100 @@ -357,7 +357,7 @@ <q>testing</q> system first and only to install most of the software (e.g. desktop environment) after the switch to <q>unstable</q>.</li> - <li>Use the <a href="../netinst/">business card image</a>. Boot from + <li>Use the <a href="http://ftp.nl.debian.org/debian/dists/stable/main/installer-i386/current/images/netboot/";>netboot mini ISO</a>. Boot from it in expert mode or with <tt>priority=medium</tt>. You will then be able to select the distribution (stable/testing/unstable) during mirror selection.</li>
