I can't change the game resolution from the game menu because the bar which is used to change resolution appears blank :(
How can i solve this or can i change the resolution from anywhere else rather than the game menu.
Thanks.

What is your operating system?
Have you set any compatibility options?

It is Windows 7 Ultimate 32 bit
No but i'm using wormkit.
Edit:Strange but its ok now :)
Hope its not happens again :)
Thanks again.