how to make subdomain of querystring using htaccess?

HI,

I have some problem in subdomain of querystring using htaccess.

for example :

http://www.example.com/html/docm.php?type=jo

to

http://jo.example.com/


so, Is it possible using htaccess.?

Please solve this problem...

Thanks,
Shah InfoSoft
http://darshakkumarshah.wordpress.com/