I am following the tutorial of fifa2000.net, but when i work in ms paint the resolution of the sponsors is bad.Nothing compared to the ones i've downloaded from you guys. Do u really use ms paint? Well this is one problem. The other is that when i put my own jerseys and i go to customise the game crashes and shows a message like: "SHAPE_clut-INVALID SHAPE TYPE" and a number like:"($7c)" sometimes other number. Please help me.
By the way do u know were can i get a good hexeditor?

come on

I can only help with the hex editors.
There's HexEdit at

http://www.bpsoft.com/

Others have also asked for hex editors in the forum. Check the posts and I'm sure you'll find more sugestions.