Searching Multiple fields

I have used CMSB for many projects but I haven't had the need to utilize the search capabilities until now. Adding a form that searches one field is really easy, but what I really want is for a single box to search across multiple fields.

Here is the code I am using:
<form method="POST" action="/news/index.php">
<input type="text" name="title_keyword" value="">
<input type="submit" name="submit" value="Search">
</form>

In addition to searching the "title" field, I also want the search to run through a few other fields. But I only want to use one <input> box. Is this possible?

-jason