auto php pop up language selector box

on my site [login to view URL] I have several languages, but people are having a hard time locating where to change the language. so I was thinking of have the language box selector auto pop up for first time visitors. if you go to my site [login to view URL], scroll to the bottom of page and you'll see an american flag, click that and the other languages pop up where you can select. I'd like that box to pop up, but for first time users only. So if they've already been to the site before, they wont see that. I think this should be fairly simple, but I'm not sure. my site is all PHP. In your reply please say "INTI" so i know that you actually read my post, otherwise I will not read your comments nor accept your bid. 5 day time limit, I really need this done ASAP, like by tomorrow, $50 bonus if you can get it done in 24 hours or less.