Web to lead form charset is broken for Russian

Web to lead form charset is broken for Russian

Please, help.........
I've implemented web to lead form on my site but russian letters are broken.

I changed charset to cp-1251, windows-1251, utf-8, but nothing changed.

I used to use Sales Force web to lead form. They have additional parameter for form action url <?encoding=windows-1251>

SF: <form action=".........salesforce.com/servlet/servlet.WebToLead?encoding=windows-1251" method="POST">

ZOHO: <form action='.......crm.zoho.com/crm/WebToLead' method='POST'>



What should I do.............???????

Ekaterina