Use this link on your BlackBerry's Browser to Install to your phone:
http://www.berryblab.com/beta/BerryBlab.jad
Make sure you have the attached file installed on your vBulletin here:
https://vborg.vbsupport.ru/attachmen...4&d=1258006671
OR use one of the test sites listed above.
If you are testing on the site you listed above, I have no tried any other language options yet, although they should work if you have the language packs installed on your BlackBerry / vBulletin.
Please let me know if it works in your Language. If not, I will add it to the list of "things to do"