Search Engines and DHTML

I currently have a site desinged in DHTML and have been told that it is not search engine friendly. Obviously it is an extreme problem to have a site that cannot be searched.

Since we have international business and need to be able to show up in search engines, does anyone know a way to work around this problem.

I have been told that the spiders are way too smart to have a splash page redirect to our site and am stumped.

Thanks in advance for all your help.

Dan.