Multi-language

How many different languages are provided in the demo data base?

2

By the way, when 1C planning to release Espanol version of platform?

Nobody knows 'bout `c' planes...

There are only 2 variants of the 1C:Enterprise Script, while there are many built-in interface languages, so you can build applications using English Script variant and provide as much interface languages as you need.
The interface languages set of the platform could be chosen during the installation. Here is the list of currently supported platform interface languages:
English
German
Polish
Turkish
Bulgarian
Vietnamese
Russian
Georgian
Kazakh
Latvian
Lithuanian
Romanian
Ukrainian

Big part of the world speaks Spanish and the absence of this version of the platform is not good

Alexey,
agree.
And if somebody have any real plans to move with 1C:Enterprise to Spanish-speaking markets, where Spanish interface would be in need - they can come with their business plans to 1C.
Mind though that the forum is for TECHICAL issues of the platform, not business matters.

#5 This is an initial list of maintained language, according to this:
http://v8.1c.ru/overview/Term_000000304.htm#1

But since it has been publicated, at least Turkish has to be added to them

And story of appearence of Turkish interface is pretty interesting. Because as far as I know, the translation from russian was accomplished by some turkish IT-team

oh! You've mentioned Turkish.... I'm sorry. :)
But anyway - My point is - if you want to get certain language in 1C - you shouldn't discard your own efforts and skills

ParaWiz: You can create support of Spain language by self, by creating ".res" files in "bin" folder - there is a simple resource bundles from ICU, and you can use derb/genrb from ICU to decompile/compile them.