Why not just record it:
<font face=Tahoma><SPAN style="color:#00007F">Sub</SPAN> Macro1()
Range("A1:C5").Sort Key1:=Range("C2"), Order1:=xlDescending, Key2:=Range( _
"A2"), Order2:=xlAscending, Key3:=Range("B2"), Order3:=xlAscending, _
Header:=xlGuess, OrderCustom:=1, MatchCase:=False, Orientation:= _
xlTopToBottom, DataOption1:=xlSortNormal, DataOption2:=xlSortNormal, _
DataOption3:=xlSortNormal
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">Sub</SPAN></FONT>
That'll give you the base code.
Smitty