SHEARING OF INTERRUPT REQUEST LINE (IRQ)

My computer network card and the motherboard sound are shearing the same IRQ
11.  Both the network card and the motherboard sound in the Device Manager
has the Use automatic settings under the Resource tab grayed out, so I am
unable to change the IRQ.  IRQ 3 and 6 are available for use.

How do I set one of the devices to one of the available IRQ?

I notice that Microsoft ACPI-Compliant System is using IRQ9, is Microsoft
ACPI-Compliant System supposed to take-up an IRQ?

IRQ 0    System timer
IRQ 1    Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 4    Communications Port (COM1)
IRQ 5    VIA Rev 5 or later USB Universal Host Controller
IRQ 5    VIA Rev 5 or later USB Universal Host Controller
IRQ 8    System CMOS/real time clock
IRQ 9    Microsoft ACPI-Compliant System
IRQ 10   RADEON 7200 SERIES
IRQ 11   Linksys LNE100TX Fast Ethernet Adapter(LNE100TX v4) #2
IRQ 11   Creative AudioPCI (ES1371,ES1373) (WDM)
IRQ 12   PS/2 Compatible Mouse
IRQ 13   Numeric data processor
IRQ 14   Primary IDE Channel
IRQ 15   Secondary IDE Channel