Search engines place considerable weight on the <Title> tag. Most SEO professionals will tell you that paying attention to this leads to rapid results - take a look at SEOMoz's comments on Keyword Use in Title Tag. Also the title tag is what will be displayed in the results - so it is a very important as it is the first thing a potential customer will see about you.
To make the most of your title tag, you need to:
A great article on improving your use of the title tag can be found at Rank foir $ales - well worth a look.