How to create my own theme?

How to create my own theme and how to upload it and how to put it on my forum?
Thanks!

create your theme admin=>>style

for uploading your skin to hitskin go to hitskin enter your forum adress

to upload other's skin go to hitskin.com and follow procedure by selecting theme.

ok...thanks...!Can i ask sth more?
This site http://www.phpbbhacks.com/ has themes...
How can i add themes to my free forum?

insert images in your forum style. by viewing the image url of phpbbhacks's theme and make your own. You have to make for that

ok...thanks!