Recognition of Version-3 Usermode Driver

As described in the DDK (Building a Printer Graphics DLL), i ported a
KERNEL-MODE driver to a USER-MODE driver (printer driver). All worked fine,
but when installing, the driver is recognized as a Version 2 printer-driver.
In the technet document "Designing for Printer Driver Compatibility", a
version-2 driver is said to work in kernel-mode.

I need a distinction of the drivers since i want to install them both on
Windows 2000 Terminal Server. Since it installs it always as a Windows-NT
4.0 or W2K-Driver (version-2 driver) i can't add the other one as an
distinct driver.

Does anybody know a solution?

Thanks in advance - Martin Dümig.