Wildcard Dns and Rewrite

hello,

i have wildcard dns for my domain.
i am catching the subdomain requests via index.php,and redirecting them to exact subdomain, if it exists in database.

so if exists,
it goes something.domain.com

but my problem is, i want to rewrite the link
something.domain.com/article.php?get=article-about-something

like this :
something.domain.com/article-about-something

thanks everyone to help

One of the most common questions, heres some good rewrite mod_rewrite answers.