Hi WxJx,
Wondered how long you'd take to get in here!
Thanks Rob and others for those links; the knowledge base seems aimed at those with Macs who have specific problems, but it is a good source of info.
I suppose it's just that I'm used to a specific set of parameters; 1Ghz is fine for most processes I need to accomplish, even if it's a third of the speed the latest PC's run at; 256Mb RAM is fine but XP really needs 512 etc etc. Then suddenly I'm faced with a whole new set which apparently bear no resemblance or equivalency.
I'm obviously going to have to find somebody with a Mac and go play with it myself!
Thanks all for your help.