[Palyntir]

found it. it was in usercp.php

the section beginning

// ############################### start signature ###############################

$bbuserinfo[signatureurl]=getsignatureurl($bbuserinfo[userid]);
if ($bbuserinfo[signatureurl]=="") {
$bbuserinfo[signatureurl]="http://images/clear.gif";
}

needed to be replaced with this:

// ############################### start signature ###############################

$bbuserinfo[signatureurl]=getsignatureurl($bbuserinfo[userid]);
if ($bbuserinfo[signatureurl]=="") {
$bbuserinfo[signatureurl]="images/clear.gif";
}

where "images" = {"imagesfolder"} without "" (this board wont let me type in the exact code.