Related Items by Tags

Hello to all.

I'm trying to find a way to show the related by tags K2 articles, on the right column of the template.
I will try to explain my problem:

I have a K2 article which belongs to a K2 category. This article has some tags.
I need to display all (or some) articles (in a form like GK News Pro display) from another category, which has the same tags as the article being displayed.

Can anyone help me or give me some directions on how to achieve this look?

Yours
Velissarios

Hi

This is a really big problem, because none of the modules can read what is currently displayed as article and know it's tags. I believe the only way would be to use articles related items. This part should be using tags of this particular article. Anyway it's still gonna need some recodding.