I too am having a problem creating a working Slipstreamed Windows 2000 SP4 3-in-1 CD. Mine is always asking for the Service Pack 4 CD.
Now before you all jump in, here's some more info...
I have a fully working Windows 2000 SP3 3-in-1 CD. I am copying the CD contents to my harddrive, applying the slipstreaming process to each of the versions of Windows 2000, copying the cdromsp4.tst file to the root directory of my CD files, copying the new txtsetup.sif files to their respective bootdisk folders, editing the copy in the bootdisk folder to point to uenglish/xxxx based on the version of 2000, and then finally creating the iso and burning it to disk (CDRW).
Obviously, I am forgetting something, but what is it that am I missing?
thanks,
Jeff