Delete entire row based on specific criteria

Hi
I have two worksheet with name 'S' and 'D'.
What I want is that-

1.to remove entire row if worksheet 'S' column A contains the first letter P Or S

2.to remove entire row if worksheet 'D' column T contains the first letter P Or S

3.to remove entire row if worksheet 'S' column N contains the first letter Y

Thanx as always in anticipation.

Thanx a lot both worked except post#2 that deletes header which is in row 1 of worksheet 'D' else everything is fine.

One last thing,what will be revised code of post #3 if I have no 3rd criteria as mentioned in my post#1

Thanx a lot.