Another method that works (and its definitely not the most efficient, but it works) is to use the reserve irq resources in the device manager to eliminate all the extra irqs except the 1 you want it to have. Its a really big pain, but it always works. Right click My Comp.,select properties, select device manager, right click Computer, select properties, select reserve resources tab. Reserve all free irqs that you dont want to use and leave the desired irq free. If windows reconfigures itself and still choses a different irq (i.e. uses the desired irq for HDD and assigns 15 to the video card) repeat process as no 2 times are the same. Who said jumpers were bad.