Say you follow r937s advice, and also change your sql slightly so that you have:
"SELECT tblTable1.fldField1 as Group, tblTable1.fldField2 as Acronym, tblTable1.fldField3 as Value FROM tblTable1 ORDER BY tblTable1.fldField1";
Does that give you an array looking something like this?
var_dump( $row) ;
0 => array(
// and so on
If so, is your question still how do I get this to display in a table?
Is it important that either the value or the Acronym be in any descending order too?