Hi there,
A few pointers for you in my opinion;
1. Obviously you need to submit your site to the search engines. This can be done manually or via various software programmes that are out there but some search engines don't really like automated submissions. Personally, I do all my sites via automated process and I've never encountered a problem.
2. I would suggest you change your page titles (in the blue bar at the top) Search engines like to see page titles that are not just your company name/index.html etc. Try to be as descriptive as possible. If you look at the Xilo pages you see a very well thought out page title for each page. Review a few sites and you will see what I mean.
3. Meta tags: Again, depending who you are some people feel these are a waste of time, others do not. It is reported that more and more search engines ignore meta tags but I feel they are worth while.
4. Keywords are important in my opinion but again others may disagree. Work on keywords and try to incorporate them into your home page.
5. Search engines like incoming links so if you know of anyone that has a site, see if they will be kind enough to place a link to your site. Of course they may ask the same in return.
6. On your pictures, use the 'alt' tag to describe your picture. This is also good practice for anyone that would use a reader.
6.
SEO: This is an expensive option and is usually done over a 12 month period or so.
7. Bear in mind that when you submit a site to the search engines, it is not an overnight thing and you won't start appearing immediately. It takes time and all search engines vary.
In my opinion you may struggle with high rankings purely down the fact that your home page has no text on it and your page title is not text, it is an image in fact you have no text at all. I'm sure that there will be people on the forum that can give you guidance as I am certainly no expert in this field.
There a few things to chew over, hope it helps
Paul