2 pc cards/1 mac

We are also trying to run 2 PC cards
mac - powertower pro 225 / 300 mhz upgrade card OS 8.1
dos card 1 - apple pentium 166 - works great, dos 6.22 or win95
dos card 2 - orange micro 660

we have been unable to get either windows 95 or 98 to boot
on the orange micro card, it keeps hanging

any help here also appreciated