The task that i am now in, is to enable the subscription interface, my first thougt is to have it included like the options that you have on hte forum, a button like the Home, Help, Profile, would it be acceptable?
I'm not sure I understand; if you just mean including those links in the emails out, I'm afraid I'm not really one to ask about such aesthetic things... I assume it would be fine (but logout wouldn't be possible.)
can you point me to the mod?
You'll want to ignore gri

. Frankly I haven't the foggiest what he's talking about (I never do.) He speaks Russian natively, but I'm told he's not much easier to understand even in his native tongue. And, don't worry - he knows he confuses the junk out of me, and probably enjoys it, so I'm sure I'm not insulting him.
The only thing I can think of is a topic I posted in Tips and Tricks, which explains that you can put ?language=... in the URL to easily switch languages (and using JavaScript, to make buttons to do this for you, without losing the current page.) But, that's neither a mod nor seemingly pertinent, here....
One point that i am very interrested in to test, is the integration if CMS, can some one give me a list of the Portals where SMF runs?
MK-Portal, Dreamportal (or something like that.. not free), and Mambo most specifically. There's work being done on both XOOPS and PHP-Nuke, as well as a few others. I've heard Drupal mentioned, and I know PHP-CMS uses an older version of SMF on their own website. I've also integrated it into other software, including MediaWiki (if you consider that a CMS of sorts.)
Luckily, 1.1 makes integration with CMS's and similar engines much, much easier (from feedback, which I must say I/we never got with YaBB SE afaik) so there may be an increase in supporting portals (or maybe not, it's always so hard to tell.)
-[Unknown]