Wp Subdomains Help.

Hi. My website is https://www.y8bomb.com Is a flash gaming website based on WordPress platform. I installed WP Subdomains plugin, and here is my problem: I want to have as subdomain only the category itself, without the posts inside it. For a better understanding here is an example.

WP Subdomain link: https://category.mysite.com/title_of_post

What I want: https://www.mysite.com/category/title_of_post

So basically I want to have as subdomain only the categories, and wehen I click a post from a category, the link should appear without the subdomain.

Can you give me a little tip on how to do it?

Thank you.
Simion