Hello; I'm looking at buying a second hard disk (ata) for a native osx install... i have done some looking but can't find the distinctions of master/slave and primary/secondary settings? could anyone help me out on this? i have a single ata drive and would want to buy another... what should i look for in particular, do i already have the ide controllers i need...

thanks



EDIT

also, I [have been] looking at upgrading my video card, from what i see ati is the better choice for osx; any suggestions for a good one less than $100?