[dba-Tech] how to stripsleam

ooops,
I mean Slipstream - sorry for that

seriously,
I have a winXP disk with slipstreamed SP2,
and I cannot remember how I did that. Must get old :(

Now I want to make a slipstreamd winxp with SP3.
How do I do that?

besides the above mentioned I have the original WinXP plus the SP3 disk and 
of course the SP2.

thanks for any help
Lembit