I know SP2 already includes fixes in SP1.
The reason I tried SP1 was just in case the SP2 in MS download site had
problem.
I don't know if it is my XP problem, but it shouldn't be because I installed
XP recently without problems.
I remembered last year when I installed XP I needed to skip some files as
these files could not be read from the CD, then when I downloaded files from
internet they were corrupted or could not be read.