need help with IRQs / wireless dying

[Ice9]

I have strange problem on my computer where any time I turn my USB printer on or anytime my computer makes a sound through the sound card, my wireless internet will die for a second, then (usually) recover. It is very annoying!

My best guess is that this might be an IRQ issue, since I seem to have a whole wack of stuff on the same one (including both the sound and wireless).

My question is, how do I find out what would be the optimal IRQ setup? I don't want to just randomly throw them around. THANKS!

My system:
1.2 GHz Athalon
Motherboard: Asus A7V133
Windows XP

My IRQ list:
IRQ 0 System timer OK
IRQ 1 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard OK
IRQ 4 Communications Port (COM1) OK
IRQ 6 Standard floppy disk controller OK
IRQ 8 System CMOS/real time clock OK
IRQ 9 Microsoft ACPI-Compliant System OK
IRQ 9 3D Prophet NVidia Series OK
IRQ 9 VIA Rev 5 or later USB Universal Host Controller OK
IRQ 9 VIA Rev 5 or later USB Universal Host Controller OK
IRQ 9 Generic 56K HCF Data Fax Modem OK
IRQ 9 Creative SB Live! Series (WDM) OK
IRQ 9 IEEE802.11b WLAN PCI Card v3.0 OK
IRQ 9 Promise Technology Inc. Ultra IDE Controller OK
IRQ 12 Microsoft PS/2 Port Mouse (IntelliPoint) OK
IRQ 13 Numeric data processor OK
IRQ 14 Primary IDE Channel OK
IRQ 15 Secondary IDE Channel OK

[SpywareDr]

If possible, and if you rarely use the modem, how about setting it to use IRQ4?