Well.......
XP is actually very comfortable with all devices on 1 IRQ. That said we're not

I really don't know a way around this but here's what I do. I never just stuff the cards in the box and turn it on. If you're not a gamer and you're doin' XP, stuff it and go! NP!
Before I reformat I try to have all the drivers saved to a CD. You must start with the Video card. Install it and add the others 1 by 1. Now for the gamer, the Video card and the Sound card gives us the most grief so I will usually install the Sound card next.
So what can you do? Well you can try to move them around in the Device Manager, You can not worry about it till it causes you grief:) You can reinstall all cards as I have outlined, You can wait to see if some else has a better idea. I am no professional, just a somewhat knowledgable user so BEWARE