Code for adding a widget area

[Topic decapped – please do not “yell” here]

http://preachjesuschrist.com/

I would like to add a widget area just below the slid thumb nails so I can add a textbox or some other widget. I would also like for the widget in the right sidebar to be smaller and within the white part of my background. Does anyone know how to do this in my CSS code? This is the oxygen theme. If I need to pastebin my CSS just let me kbnow. I haven’t changed it though.