gauge installation

hey everyone, i need some help. i got 3 new gauges for my 2001 chev cavalier Z24.. its gotta 2.4L twin cam engine. i got a voltmeter, oil pressure and a temperature gauge.. the volt one is easy i know that but if anyone could help me as to where i hook up the other two too. ie.. where is the correct oil pressure port on my engine block and also where the temperature sending unit is on my engine.. it says to remove the exsisting one. if i can get help with that, that would be much appreciated. if nesessary i can take pics....thanks in advance for your help. Colin