Hi all, I have recently bought my first Mac - it's a Powermac G4 Graphite with a 433Mhz cpu, a 30 gig HDD and 1.25 Gigs of RAM. All that for the princely sum of £25 I remember always wanting one when they first came out, so it'll be pretty cool to own one even though they are quite old by today's standards. It arrives tommorrow and I believe it currently has Panther installed - the first thing I would like to do is put Tiger on as my father used to run this on his Mac Mini before upgrading to Snow Leopard and I quite like it. My questions are thus: - How capable will it be of running Tiger? Will the slow CPU let it down at all? - It currently doesn't have a DVD drive, only a CD-RW. Can I put in a normal IDE DVD-RW drive? Only because the Tiger install disc I have happens to be a DVD (it is the PPC version). - I'd like to upgrade the hard drive - I've got a 160 Gb IDE drive hanging around, will this be a straight swap? - Can the CPU be upgraded or is it hardwired to the motherboard? Also, how interchangeable are the parts with normal PC parts? Can I add normal SDRAM to it (got quite a bit sitting around)? What about stuff like power supplies and the like? Sorry for the dumb questions, I'm pretty experienced with PC's but I've never owned a mac before and I'm looking forward to it even though it is an oldie. Cheers.