Form problem

[eluser]xwero[/eluser]
I think you better keep the name of the inputs in English. Normally users will only see the name of an input if they look at the source of the html page.

If users are allowed to create forms then it's another situation. Then i would recommend to filter out the character that aren't in the basic ascii character map.

Having one name also makes it easier to validate and store data from the inputs.