Install.php problems (wont run)

Hey, I know this is easy, but not for me!

I fill in the WP_config.php (i have checked 5 times)
upload it to my FTP
Rune the Install_php, from my FTP Site

i only get at lot of text (code stuff) on the screen…

One time i got a menu that said that i needed to change the DATABSENAME… i did and got the code stuff.

Even if i make the same error as before (no DATABASENAME) i cant get the same result….

Regards
Aske