what is the suitable version of w8 for my pc?

[ToFFo]

As far as I know, the professional version of Windows XP and 7 only had some extra features, but in fact it could also make it difficult to hook up with other Windows computers on a LAN if they ran other versions of Windows. So, if you had XP Pro and some other dude was running XP Home, problems could arise.

I only remember this to apply for XP..

However, you can choose either of them, it doesn't really matter. What is a question to me, is why you even wanna run Windows 8 on a regular PC since its really aiming at touch devices.