A. The address for the SCCM Toolkit will change over time as newer versions are released. As of this writing, the latest version for SCCM 2007 (version 2) is available here . The easiest way to find it is to use Bing to search for SCCM 2007 Toolkit.
If you use SCCM, it's highly recommended that you use this toolkit. One tool you'll use a lot is Trace32, which makes the SCCM logs easy to read. The first time you launch Trace32, it will prompt if it should be used as the default viewer for SCCM logs. I suggest you say Yes, as shown here.