Enhancing my website's position on the web

Web site has been up for approx 3 years. Want to maximize it's exposure on search engines. Its a yahoo point and click site. I do the maintence and have recently begun advertizing with google - key words fly fishing and fly tying. Looking for any way to improve my online visability. According to yahoo I'm getting about 15,000 customers (45,000 page views) a month. I need to see a distinct change in visitors as well as sales. Please indicate what you feel would be a realistic expectation in these areas. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site). 4)Full, explicit directions on how to use - I'm not real computer literate. Have never taken any courses/instructions but have picked up some html along the way. ## Platform I use windows me. I'm not sure how to answer the rest of the question. I use Internet explorer and netscape. Would the browsers used by visitors to my store be a factor? Has to be compatable with yahoo's system (?)