if you mean like this
than i made just this :
open your stylesblack_pearltemplate
overall_header.html
and find this line
<td align="center" valign="middle"><h1>{SITENAME}</h1><span class="gen">{SITE_DESCRIPTION}</span></td>
what i made i just changed aling to left like this
<td align="left" valign="middle"><h1>{SITENAME}</h1><span class="gen">{SITE_DESCRIPTION}</span></td>
thats all , anyway this line is for header site description