How can i get my residence in Russia

I think you will find some pretty good information on this subject at waytorussia.net. There are a few other websites too, search for 'Russia visa' and you'll see a lot.

However, official 'residence' is very difficult to get, I think, unless you have relatives here.

It's possible to get a long term business visa, I think ( I don't know if it's different for Argentinians vs UK passports, as I have).

Have you been to Russia before? What kind of work do you intend to get?

Good luck.