Is this better than the playstation release back in '98?
I know the PSX version have a limit on how many utnis you can build because of the low memory of the console, but is this the same game or is this different in other aspects besides the unit limit?

Late reply, but anyway: the PC version of KKnD Krossfire allows you to construct custom units, has better controls (obviously) and the campaign missions seem to be different. It also features higher resolution graphics, more sounds, more options in the skirmish mode and some minor gameplay differences.