|"not much helpfull about ur link"|
Why not? All you needed to do is select the correct CPU from the list, then read how to apply the thermal paste. You have a single core P4 so the proper method is the "middle dot". That means all you should have done was put a tiny dab of paste in the center of the CPU, then lock the heatsink in place. If you spread the paste around like putting frosting on a cake, you did it wrong. And of course, the heatsink MUST be properly secured.
Below are the Middle Dot instructions. If it's not the way you did it, I suggest you take off the heatsink again & do it right.
"temp is at 70 now"
70 Celsius? That's WAY too high. Your CPU should be in the 30's to low 40's at idle, 50's-60's under full load.