Hi,
Just a quick thought on your site. Just some quick alterations you could do.
Maybe move the spash page image onto the index page, search engines are not very good with splash pages as the first page is considered very important in page rankings.
Have your navigation with a background, something very faint, any colour really. Make this extend right till it meets the image, then on hover change the colour to a bit brighter.
Increase the font size and use a different font style, use something like Tahoma or Verdana. You could keep the font you have but deffo increase it.
Thats bout it i think. Just quick changes you can do there. I no expert but worth a go
