Many thanks gedr -- bit of information overload, but I understand the Mac jargon a bit better now.
An iG5 seems in order for him -- not convinced enough to dump the PC myself after this level of investment. Mind you his PC has never fully recovered from an attack of re-setting up by his brother-in-law a couple of years ago!
imarcus, unless your colleague made of money he should have a look at the iMacs before shelling out on an all-singing, all-dancing G5 - you'd need to spec up the ram in the basic iMac but apart from that I think they'd probably do the trick.
'imarcus, Whichever you get don't waste money on anti virus, it's not needed'....Oh really, Mr Jobs and the rest of the Mac crew would seem to disagree, unless you know better of course and I quote, 'The second-most prevalent type of virus, Macro viruses, can attack both Macs and PCs', please discuss......click here