Don't do splash pages! They are just annoying and you will simply loose readers.
For choosing a language, you can use the ip address of the one accessing the page to figure out in which country they are, and then show the appropriate language. Google even does this.
Most users will then get the language they want, and the few who just happen to be abroad or don't speak the language in the country they're accessing your page from, you can have small flags on your page where they can switch.
Also, don't make your whole page in flash and make sure people can link directly to and bookmark stuff on your page.