I am trying to make the template wider. I went throught 1st 100 messages (and last 20), there are just tooo many.. so I tried this:

.centerColumn {
width:100%;
float:left;
margin:0;
padding:0;
text-align:left;
line-height:1.6em;
}

but the width is still the same.
P.S. I would like to keep the sidebox