Adding A Scroll Bar to My BlogRoll

I use WordPress.Org, not WordPress.com. My blogroll is MEGA long! I want to put it in a box and add a scroll bar. I have found this language, but I don’t know how to insert my actual blogroll. I can’t find a plug in that works with 2.7.1. Can anybody assist?

Can this be done by adding a text widget and inserting code?

<center><div style=”border: 1px dotted blue; overflow: auto; height: 100px; width: 270px; color: red; background-color: white;”>ALL YOUR WONDERFUL BLOGROLL INFORMATION WILL GO RIGHT HERE</div></center>