If you are a frequent user of Leopard you probably are familiar with the Spotlight feature and how it functions as a search tool for items on your Mac. There is a preference setting that lets you customize the way items appear when search results are listed in Spotlight.
For example, you can set it up so that the top of the list is always applications, followed by documents, folders, email messages, music. etc. Whatever works for you. You can also eliminate topics.
To set the preference select Apple > System Preferences >Spotlight > Search Results. Put a check in the box next to all the things you want included in your searches and then drag item into the order in which you want them to appear. Here is an example.
A lot of people (especially those who don’t like to use the Dock) like to use Spotlight as a fast way to access their applications, so they always want them to appear at the top of the search list. It is really quick to type an “N” in spotlight and have Numbers appear. You click on it and the application Numbers will open for you.