Ah I thought it would slow me down or something, I have no idea how it would work. I really don't get networks that much!
so is a NAS basically a computer that just holds aload of files etc and you just access them as if its a big fancy USB pen drive? (sorry for the lack of technical know how)
I'm going to be upgrading my pc in august, so will have an i5 with mobo GTX 460 spare 4gig of ram, so HTPC is making more sense to me now.
I live in a flat so only have 1 TV don't watch films/shows on anything else so being able to access it on multiple devices isn't needed
A NAS is a purpose built PC that usually runs a specialised OS that is purely there for the storage and sharing of files. It really is nothing more fancy than a PC storing and sharing files across a network.
If you only access media from one TV and are trying to save on cost then upgrading your PC with some more hard disk space and storing your media on that and sharing it out to whatever media device you decide to buy, is one route.
If you wanted to keep it all separate you could go and buy a xTB USB drive, an Intel NUC running OpenELEC and plug the USB drive into that and it would detect and play quite happily. I am sure other devices would be exactly the same but I have no experience of them so can only tell you what the NUC can do.
You have a lot of choices and everyone would do it differently, depends on what works best for you. Good luck!