Can Anyone Help Me Out?

When I decided I wanted another sidebar on my blog, I searched for tutorials and finally managed to get it done. But, me being the way I am, that still wasn't quite good enough. I want my sidebars to extend to the bottom of the blog. So, once again I set out to find a tutorial. I used a site called Blogger Buster to help me before, and it is so easy to follow that I thought surely I could make this happen. WRONG! I followed these instructions exactly several times over and it just is not working. In fact, I am having a similar problem to the one I had when I moved my Entrecard widget from the left sidebar to the right. When I would put the HTML for the widget into the box and apply it to my blog, Blogger automatically changed the code. The only way I finally got it to work was to delete all my other widgets, add the Entrecard widget back in, then replace all the other ones. The same thing is happening when I do the code for the sidebars. When I preview the blog and see that it hasn't worked, I go back into the HTML and see that the order has been changed automatically. I am NOT knowledgable about CSS or HTML, so I don't know what the problem is here. A friend of mine designed the template, so I don't know if it's something particular with the template that is keeping it from working or what.

Some commented on that site that it worked in Firefox but not Internet Explorer. I almost always use Internet Explorer because I prefer it, but I checked it in Firefox as well and it didn't work there either. Not to mention that it obviously CAN work in IE because that's what I usually use and I see blogs with sidebars that go all the way down using that browser.

You see, when I get my mind set to doing something, it's VERY hard to get me to stop trying. I don't give up on figuring things out easily. The thing is, this can clearly be done because I see it on other blogs. It just figures that everything I want to do has to be so complicated! Is there anyone that might be able to help me with this? PLEASE?!?!