Will hardware drivers installed on a guest OS work even if they don't work on the host OS?

Scenario:

VMware Workstation:

Windows 7 SP1 64 bit host

Windows XP SP 32 bit guest

A scanner and a printer only have hardware drivers available for Windows XP.  No hardware drivers are available for Windows 7.

If hardware drivers for these devices are installed on the guest Windows XP OS will they work?

Thank you.