Caption alignment

I am still having problems with this issue in this previous post. I use this code
[caption align=left]<img src="/news/sites/sites.sfsu.edu.news/files/u10/74b.jpg" style="width:195px; height:255px" title="Example caption goes here" />This is a left-aligned caption[/caption]
but it still hasn't yielded any results. The caption appears under the picture and it has not been floated. Just to make sure that alignment was possible I even went into the css and added

div.caption-left {
 float: left;
 margin: 3px 15px 0px 0;
}

but still I haven't been able to figure it out.