Help to Adjust sidebar width

I have a theme called Cool Biker 1.0 that I found some time ago. I am using it on http://www.ridewithjoe.com. I have a few issues.

1. I need to expand the width of the sidebar so that the new twitter widget design will fit. It’s over 200 px.

2. I have a problem with some widgets not aligning correctly within the widget box.

I’m not a code but and pretty good at modifying things if someone can point me in the right direction.

Thanks
J