Remote Desktop problem with remote printers

I have a remote desktop client using Server 2003 and have several XP
Pro machines
that remote into the server. We were able to get all the XP Pro remote
machine printers to print locally by making the registry change in the
below
knowledge base article:

http://support.microsoft.com/Default.aspx?kbid=302361

We now have several Vista Business machines that cannot print to their
local
printers. We tried making the above registry change and it doesn't
correct
the problem in Vista.

The remote Vista machines are running HP2420 and HP4250 printers via
the USB
Ports.