PretoriaSillyperson,
WinXP loves to configure its own IRQs, usually the only way to change them is to turn off Plug and Play OS in the BIOS and set the IRQs manually.
SB Live! is now a Legacy Device. It is one of the last devices made that needed a specific IRQ to function properly. With the latest Hardware, it does not matter IRQ it ends up on, just whether or not it is sharing an IRQ with another device.
Take Care,
Richard