When I look at sites to purchase Win XP, I see the following >>>>
XP Pro SP2c English 1pk DSP 1 OEI CD
1) I assume there are now 3 versions of SP2 since it is labeled "C".
2) What is the meaning of DSP ??
3) What is OEI ?? I know what OEM is.
Googling the terms does not produce a clear answer on all points.
4) Some sites advertise giving a "certificate of authenticity" and a "key".
I always heard the KEY was the most important thing and the only thing needed to register and become legal.
Any advice appreciated.
TIA