Make sure you don't press down on the PPC heatsink when installing this card, as the PPC chip is very fragile and would most likely die.
Make sure that some memory (at least 8MB) is present on the card when you power on, as CSPPC must have some memory on it in order to let you boot up.
The motherboard CPU clock jumpers should both be placed to EXT position.
The fan that goes over the PPC oroginally came in the 5V flavor. If it's still a 5V fan, I'd take it off and replace it with a quality 12V one (Sunon makes good quality fans) which will directly receive power from the PSU, instead of the PPC card itself like the old one.
Remove the PPC heatsink and blow off all the dust that is underneath it, or the PPC chip itself, with a can of compressed air.
Remove (CAREFULLY!) heatsink grease if it looks dried out and replace it with a new coating. Make sure it is only passive heatsink grease, and not adhesive!
That's all the tips I can think of. ;-)