Video capture cards and Max 5

Hi people,

I'm building a system with 5 PCI video capture cards and would be grateful
if you could share some info.
What kind of capture cards are compatible with Max 5, do they have to comply
to some specific standard or is it just plug and play situation?
Does Max 5 support as much as 5 capture cards?
Not related to Max, how many cards of the same type can be inserted in the system?
Any other suggestions about capture cards and/or Max 5?

Thanks a lot