Firstly, I've just spent the last hour writing a query only to have it disappear and have it replaced with a Server Error screen, so I lost the lot. Very frustrating. So here goes again! I want to attempt to build my first ever PC to be an HTPC for my AV set-up. I have been reading and researching like mad to try and decide what components to buy and where from etc. I do find that the more I read, the more I come across the assumption that you know all the obvious bits and pieces. To use an analogy - it is like asking someone how to get to London and them replying "Oh, just drive down the M1" the assumptions being that a. I now what 'drive' means and is referring to, b. I can drive, c. I now what 'M1' means and d. I know what 'down' is all about!! Anyway, some queries: 1) The Motherboard I am thinking of getting is an ASUS P4C800 E-Deluxe which, their specs, seems to rattle on about all sorts of different HDDs - S-ATA, UDMA 133/100/66, Serial ATA and Ultra ATA 133. I'm trying to decide which HDDs to go for (I've seen a nice looking Maxtor 300Gb one that I would like to have 2 or 3 of) so does it matter or should I be favouring one type? Can HDDs be mixed an matched? Can the MB handle three HDDs? 2) It appears from reading around (and I only came across this by chance) that Windows XP doesn't address anything over 137Gb no matter how big the HDD is!! The adverts don't appear to mention this. To sort this problem, apparrently upon installing wXP you have to immediatly download Service Pack 1!! Why? Why isn't this in a new XP? It would be like buying a car and having to immediately give it to the garage to have an upgrade fitted!! Then (it is not over yet) you have to download a file from the manufacturer of your HDD and of course it's assumed that you know what to do next!! Does this file just get on with whatever it has to do or do you have to run it? If you have more than one HDD, do you have to do something to each disk or does all the above take care of all disks? 3) Does the MB, HDDs, Graphics card (in fact anything that is going into make up the HTPC) come with beginners easy to understand instructions telling how, where and what to connect to what? Or am I supposed to know how to 'drive' already? 4) When everthing is assembled in the HTPC case and plugged in, do I just switch it on and hey presto, as if by magic, everything works? Then do I just load XP and go through the process above? 5) Is there a resource on the Web that guides you through building a PC in easy to understand instructions? 6) Finally, one of the reasons for building an HTPC (after seeing the demo laid on at EventII) is to have a high quality image output to my PJ and Plasma. I currently have an old PC (not connected to my AV system) that I tried Star Trek Insurrection on and it looked just as bad as on my Plasma through my standalone payer. The PC is an old PIII 933Mhz, 256Mb Ram, WinME, playing on ATI 7.0 Direct SHow DVD player which came with my Graphics card, an All-in-Wonder 128 Pro AGP. I'm hoping someone will say that the DVD would look bad through this set-up and that Theatertek and a modern PC, Graphics card etc. would solve all this. The demo of the same disc at Event II didn't show any of the problems I've seen. So any help on the above would be gratefully received but remember, don't assume anything!