Yes it will. If you want to use Aero you need to make sure that you have a good video card.
No.
That depends on your motherboard. Most Prescott motherboards did not support DDR2 RAM.
You cannot convert an existing motherboard to DDR2. As The Intel Pentium D was actually designed for motherboards with DDR2 RAM (you must have gone out of your way to purchase one with DDR RAM), it should be no problem to move the processor to another board.
You probably have a malfunctioning temperature sensor. A Pentium 4 will shut itself off after it reaches about 75 degrees Celsius.
Depending on its age, either SDR SDRAM, DDR, or DDR2 RAM.
It depends on the NorthBridge of the motherboard and the socket of the P4. Most intel-processor supported DDR3 Motherboard should be able to run a pentium, but remember that Pentium4 are very slow and DDR3 is still very immature. I recommend you to rather spend more money upgrading your CPU AND MOBO, rather than moving directly to DDR3.
some game can run on that but not so good.
This depends on the machine's age. Older Pentium 4s used DDR RAM. The latest ones used DDR2. Do not purchase RAM without verifying the correct type. Use a tool like CPU-Z to identify the memory on your system.
It depends on your motherboard. It likely uses either DDR or DDR2 memory, and the speeds that are supported vary by the make and model of your motherboard. It doesn't support more than 4gb of RAM.
It's from India, and is $35. It's a touchscreen tablet just like the iPad.
A type of computer memory. http://en.wikipedia.org/wiki/DDR2
There are 240 pins on DDR2 and DDR3.