Noobie FS2004 Scenery Question

Good Evening Everyone... I just started FS2004 and already i love it!! I just have one question. I live in Southern Quebec, and my local airport (which i actualy work at), St-Georges CYSG, unfortunately has a tree located at the end of the runway in the simulator. Is there any way to remove it? And also i don't believe that the runway is as long as it is in R/L. How would i go about changing that as well?
Thanks for the help,
Henry
Thanks for the help,
Henry