STATUTORY INSTRUMENT No. 77 of 2008 STATUTORY INSTRUMENT No. 138 of 2007 STATUTORY INSTRUMENT No. 92 of 2007 STATUTORY INSTRUMENT No. 123 of 2007 GENERAL SALES TAX REGULATION, 2006 STATUTORY INSTRUMENT No. 60 of 2006 STATUTORY INSTRUMENT No. 90 of 2006 GST ACT 49 of 2005