Ethernet adapter interfering with Mouse

I have tried 2 different mice (a Logitech and a Microsoft) on my
laptop running Windows XP Pro SP3, and both of them were jerky. I
finally traced the problem to the built-in ethernet adapter. Once I
go into the Device Manager and disable the Intel Pro/1000 PL network
adapter, then the mouse will be smooth. It will still be smooth even
if I subsequently re-enable the network adapter. But if I restart
Windows with the network adapter enabled, then the mouse will be jerky
again.

Not sure what's going on here, maybe it's a resource issue. I noticed
that the network adapter is on IRQ 16, and one of the USB Universal
Host Controllers is also on IRQ 16. But Windows won't let me change
any of the resource settings for the mouse or the network adapter. I
also tried a different USB port and still had the same problem.

Any idea on how to fix this?

If not, then is there a way to disable and enable devices from the
command line? I'll just have a script disable and re-enable the
network adapter on startup.