You can change that in the file template_css.css.
Search for the section MODULE. There you find the following blocks:
div.moduletable h3 {
margin: 0 -12px 10px -13px;
padding: 0 10px 0 20px;
color: #666666;
background: url(../images/h3-bg.gif) no-repeat bottom #E1E1E1;
font-size: 1em;
line-height: 21px;
text-transform: UPPERCASE;
height: 22px;
}
div.moduletable h3.collapse {
margin: 0 -12px 10px -13px;
padding: 0 10px 0 20px;
color: #666666;
background: url(../images/h3-bg.gif) no-repeat top #E1E1E1;
font-size: 1em;
line-height: 21px;
text-transform: UPPERCASE;
height: 22px;
cursor: pointer;
}
Change the bold lines to text-transform: none;. That’s it!
Good luck,
Tom