Pokemon Pearl Help

Okay I downloaded a pokemon pearl ROM and opened it up in Ndesmume but it only shows up with a black screen ??? (By the way yes I have clicked execute) Can anyone help?

did you extract it from the .rar file?

Please read the following thread for information on emulating Pokemon:https://www.romulation.org/forum/index.php/topic,567.0.html

Yes I did extract it..but I'll try what you said Seph
Thanks ^^

It woked
Thanks alot :D