If you have slow graphics performance and mouse responsiveness in the Windows Vista guest operating system, this is due to Windows Vista has display adapter hardware acceleration disabled by default. To enable display hardware acceleration in a Windows Vista guest OS, open the Control Panel, then click on Display Properties control panel and go to the Settings tab, and click Advanced. Open the Troubleshoot tab, drag the Hardware acceleration slider all the way to Full.
When you first install suse server sp1 on virtual pc 2007, sound card does not detected.
To enable sound card go to "control panel" select "sound". Select "add" when sound cards listed.
From list select "Creative" on left, and select "SB 16" on right side. Click next.