On 25 Nov 2008, at 19:13, Marc Morris wrote:

I've tried typing "<none>" in block title but it's not removing the
headers.

Any other suggestions?

I'm on Drupal 5.

Is it a block created by a module? A quick temporary fix would be CSS,

something like .block h2 {display:none} or .block h2 {text-indent: -9999px}

HTH

Nicolas Borda