Check with the motherboard processor compatibility sheet of the motherboard you have first. A BIOS update may be needed for your current motherboard.
No, you cannot.
Dozens of motherboard models are capable of supporting an Intel Pentium Dual-Core.
A Pentium 4 processor, and a motherboard that supports it.
On the motherboard.
168
socket 9
None, other than that you can get a Pentium I computer for about $5.
No, A Pentium 1 is a type of CPU chip. They don't make them anymore. It is a single core and would have to be used on an old motherboard with the proper pin slot.
That would require purchasing a new motherboard, processor, and power supply.
Yes.
Pentium II
I've yet to encounter an AT motherboard that supported a Pentium III processor. All the same, it is possible to run Solaris 10 on a Pentium III computer. You'll need at least 256 MB of RAM, however.