I prefer not to use PCI slot 1, so the gfx card gets lots of room to breath.
Some mobo manuals tell of which PCI slots are shared with each other and/or with controllers etc.
Usually 2 & 4 work for my Abit board. I only use two though.
<b><font color=blue>~scribble~</font color=blue></b>
<A HREF="http://www.ud.com/home.htm" target="_new">Help cure cancer.</A>