Augmenting Al's terse reply, the major feature in your system that is not supported with Windows 10 is its processor-based graphics subsystem. If you already have an add-in graphics card, then you have less things to worry about in your Windows 10 upgrade. If not, then you need to consider getting one. If your system is this old but doesn't have a slot for an add-in graphics card, then it is time to be considering a replacement.