$SQLcall = "SELECT * FROM main WHERE main.whatever = '$whatever'";

use Win32::ODBC;

    	$DB = new Win32::ODBC("TheNameYouGaveYourODBCSource");
	$DB->Sql("$SQLcall");

	$DB->FetchRow();
     	$check = $DB->Data();

                    $getwhatever = $DB->Data("whateverfieldnameyouwant");
                    
 	$DB->Close();