my sister's cat is starting to get annoying...:S

Ok, my sister's cat is really getting annoying lol. She likes to lay down between my keyboard and monitor of my computer, and roll around everywhere! she gets in the way, rolling on the keyboard, pressing buttons, and she started bunting my dads keyboard right off the desk with her head, and almost pushed my speakers off onto the floor! Im afraid shes gonna break something! How do I stop her from doing this? At first it was cute, and I took a bunch of pics of her....

Unless you keep her locked out of the room you can't really.

Rosie does this to me all the time and is forever sitting in front of the computer screen, walking across the keyboard etc..

She normally does this when she wants some attention or a couple of treats.

Harley does this too - but when he does it, I just pick him up and give him some cuddles, kisses and play with him a bit, and then he's off doing his own thing again.

Maybe your sisters cat is just bored and wants some attention or to play!