Acess rights for VM140 driver on Windows XP prof

Hello,

I tried to install the driver for the VM140 USB interface card on WinXP Prof.
When having administration rights, everything is fine and I have access to the card.
But without admin rights the card can be connected in the same session as the installation, but after a reboot or logoff/logon for the same user the connection is not successful.
Has anyone an idea what I can do: register some driver manually or insert an entry in the registry, someting?
As I understand it, USB must be acessible without admin rights.
Thanks for all replies!