Hi, randeep_k,
Based on my understanding, you want to add some custom styles to your Windows Application, don't you?
There are several ways to add custom styles.
1) Use Windows themes.
This could be done with VisualStyle enabled in your application.
http://msdn2.microsoft.com/en-us/library/system.windows.forms.application.enablevisualstyles.aspx
2) Use some images to act as the background of your Windows Form
This sample is really nice.
http://www.codeproject.com/cs/miscctrl/AlphaForm.asp
3) You can use images to work as your controls as well.
Here is a sample of how to use bitmap to work as the region of your form and controls.
http://www.codeproject.com/csharp/bmprgnform.asp
Hope this helps,
Regards