you can download the language pack for p800
here
this is the new pc suite 1.1.1 for p800 when you open your computer files
C:\Program Files\Sony Ericsson\Mobile\Phone Languages
but when you download a version languages the p800 doesn't want
I have phone SE and they say
"it is necessary to make a stake has days because currently the version that we have all of the p800 doesn't accept the downloadage of the languages it is necessary to make the first stake has days to be able to make operate them but good"