Hi guys,I am new here, and would like to begin by saying how useful I have found these forums to be. I have only recently become interested in flight simulation, and am currently using FS9 on an old PC with severely inadequate spec. Over the next while I am looking to put together a PC that will give me far better performance, but on a relatively tight budget. I was under the impression that a half-decent FSX rig was going to be way out of my league, however after reading through a number of very informative posts on this forum, I have decided perhaps I could obtain reasonable FPS without completely breaking the bank. I am in the UK and my budget is around £600 (approx. $900 USD).I am not currently familiar with over-clocking, and have never attempted building my own PC, but I am fairly technically-minded and am sure with a little research I will manage just fine (hopefully!). I am assuming that over-clocking will be necessary to achieve better results? Here is a list of potential components based on my research thus far:CPU: Intel Core i5 2500kMB: ASRock H61M/U3S3RAM: Mushkin 4GB (2 x 2GB) DDR3 1333MHzGPU: GTX 460 1GBHDD: Seagate Barracuda ST500DM002 500GB SATA 6.0GbpsDVD: ASUS SATA 24x DVD BurnerPSU: Corsair 500w 80PLUSCase: Cooler Master HAF 912 with 2 x 120mm case fansCooler: Stock cooler included with CPUIntegrated sound and ethernet with motherboardAll of this comes to around £575 (based on Amazon UK prices). Is there another place you would recommend to purchase components?I will be using only one monitor (for now) at around 1680x1050 I guess. I have a few add-ons and will likely purchase more, eg. iFly or PMDG 737 and some scenery etc. Am I likely to achieve reasonable FPS from this rig at this kind of resolution? If FSX is going to struggle, I may end up sticking with FS9 but it would be great to be able to upgrade. I will also most likely be running Windows 7 x64, as I can see from this forum that it is likely to be my best bet in order to keep everything current/up to date.Is the PSU I have listed adequate for this rig, also?Apologies for so many questions, but this seems like something of a minefield to me and there is so much information out there I am starting to get a little lost!If there is anything I have failed to mention then please let me know.Many thanks in advance, your advice/expertise is much appreciated.Tom.