Hi there, to post pictures you'll need to use a hosting site - photobucket, tinypic, or similar.
Upload your pic and then use the [img]abcdefg[/img] tag to post the picture up. You can re-size it using paint/irfanview etc etc (640x480 is a good size)
If you do a forum search on uploading images you should find more info. Or check the 'site help' sub-forum.
Re your kitty being a bully..i think they learn as time goes on what is acceptable, and what is not. Having only been with you a week, she will still be learning and testing you, getting used to her environment.
I find that removing the kitten from whatever it is he/she is doing that he/she shouldn't be, coupled with a firm 'no' usually works.
They get fed up eventually.
(Honestly)
You could also try the water squirt method (make sure kitty doesn't see you squirting the water) or the coins in a jar method. Noisy, but effective.
Best of luck. x