Russian language support for iPod 10 GB (firewire) ?

You should ask this in the forum for that device, which is here:

http://discussions.apple.com/category.jspa?categoryID=151

You should also identify your ipod more exactly if possible. Here is a chart:

http://docs.info.apple.com/article.html?artnum=61688

Then you can probably find the tech specs via Apple or Google. Here is one example (Russian not supported).

http://support.apple.com/specs/ipod/iPodoriginal_scroll_wheel_5_GB_10GB.html

Looks like this one:

http://support.apple.com/specs/ipod/iPodtouch_wheel_5_10_20GB.html

Languages are these only (no way to add anything): English, French, German, Japanese, Spanish, Italian, Dutch, Danish, Norwegian, Portuguese, Finnish, Swedish, Korean, Simplified Chinese, Traditional Chinese