Re: Would ubuntu be a good choice?
Some will argue with this, cause after all, you ARE in the Ubuntu forums, but Ubuntu is not some miracle cure that is going to turn a wornout old slow PC into a powerhouse of performance. They will say that Ubuntu will run faster than Vista -- but while that is true, basically ANYTHING will run faster than Vista. Vista barely runs, limping along, with your processor and only 1GB of memory. IF you want to get more out of your hardware, you should boost that to 2GB of memory. I did that on a old laptop and the boost in performance was amazing.
The main downside you're going to run into is drivers -- a long-standing weakness of the Linux distros in general. The more specialized hardware you have on your PC, the less likely it's going to work well in Linux.
If your PC can boot from USB, I would use the Universal USB Installer from PendriveLinux .com, together with an ISO file of the Ubuntu version you want to run, to create a bootable USB stick of Ubuntu, boot from that -- and see how well it detects your hardware and installs working drivers. It will run slower than usual because it's reading from a USB stick, not a hard drive, but you will get a feel for how well it works and how it behaves.
Ubuntu 15.04 Mate, Mint 17.1; MS Win 8.1, Win10 TP.
Will not respond to PM requests for support -- use the forums.