Enable sound on a virtual machine

After installing a windows 2003 VM for example using Microsoft Virtual PC, by default sound is disabled. To enable it :
1/ - go to control panel > administrative tools > services, and activate windows sound (set automatic), then start the service
2/ - go to devise manager, you found sound blaster 16 devise (not installed), click update driver, and use this SB15 win2003 driver to install it (unzip it to c:\windows\inf for example)

now I will hear my screamer radio while I develop :-)