how to create a sitemap for our website.
how to improve search engine optimization.
That is all a bit vague what you post. Do you want a sitemap of HTML pages/links, url's, disk files, etc. and in format text, HTML, XML, ??? Do you want us to write the code for you or have you made something yourself already? If the former: you are in the wrong forum, in the latter case, show the code you have made so far.
Ronald