>>I made an upgrade from Win98 and converted the FAT partition to NTFS.
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>I have read more problems with people peforming upgrades. Is is possible to create a new primary partition on your hard drive and install W2000 to the new partition? You can use a utility called Partition Magic to create the new partition within Windows itself.

I deleted my Win2000-Test-Computer an reinstalled Win2000 (no upgrade). And now my FPW2.6 application works.
But can I force our customers to delete their partitions (and install their thousands of programs) and install Win2000 on a blank computer? I think no, MS has to do something.