OLSitemap is very easy to use - installation is extremely easy, and detailed instructions and tools are included.
I took a look at your site. You should add META keywords and description to each page on your site as well to assist the search engine in evaluating the relevancy of each page when they index your site. You can add those for each page via Page Properties -> Search Engine Optimization.
In terms of navigation organization, I would suggest putting some of your pages as child pages under parent pages. For example, you have all those different rooms listed - bathroom, bedroom, etc. you can move those under a page called The Chalet or Chalet Layout. You can re-arrange your pages by going to Page Properties->Edit Navigation Position for each page.
Finally, make sure you have submitted to the search engines, esp. Google and Yahoo:
http://www.google.com/addurl/?continue=/addurl
http://search.msn.com.sg/docs/submit.aspx?FORM=WSDD
https://siteexplorer.search.yahoo.com/submit
Remember to submit your URL for the above as http://totallylg.com and not as http://www.totallylg.com. To expedite and make the indexing process more efficient, using OLSitemap will definitely help.
Royster