How do I remove the title bar on certain blocks

http://drupal.org/node/11295

Seems to work with some themes. Does not work with others though....

There are a couple of ways to do it but I think the best is using CSS
You can hide it by stating «display:none» to the class «title» in all blocks, in all blocks of a target side bar or in specifics blocks using their ID. I think the latter would be best for your needs.

For example, here is what i have done to hide titles of all blocks on my site. I could display a single title by adressing a new command on a specific block using its ID

.block .title {
/* border-bottom: 1px solid #bbb;
padding-bottom: .25em;
margin-bottom: .25em;
color: #000;
font-size: 1.1em;*/
display: none;
/* HIDES ALL BLOCK TITLES */
}

hope it answers

jp