I used to own a BH6 rev1 (my brother has that one now).
I would find it incredible if the ATI RadLE was incompatable with the BH6.
The BH6 is one of the all-time classic motherboards and I would have no qualms about owning and running one even now, years after it's release! It is excellent.
Make sure you have the most up to date BIOS, etc.
Also, The AGP slot and PCI-1 share an IRQ.
Make sure you don't have another card in the 1st PCI slot when installing the Radeon. That might be the source of the problem.
I assume you are installing the OS with an older video card ?
Make sure you install the "Standard VGA driver" first, then reboot. Then install the Radeon drivers. ATI has some more detailed instalation instructions on the CD or their web site.
Are you overclocking?
Don't, at least until you have everything up and running.
Are your memory timings maxed or conservative?
Slow the memory timing in the BIOS if you're maxed.
[This message has been edited by Peter_Mann (edited 09-29-2001).]