Welcome to the 90's folks, that is how computer's used to look like. Tiny CPU's, tiny coolers, tiny bearing going out vibrating CPU fan, 1 RAM channel, and your lucky to have an AGP slot, most were PCI back then.
Oh but look, it has a dubug port, bet thats never been used to even debug a toaster. That fan is going to be doing the, "I think I can, I think I can"
If it was a plane instead of a train, and you said V1, rotate, it would crash at the end of the runway. No Tom, I don't think you can, that aint just dust in your old ears, thats sticky gunk too.
No dedicated GPU, gaming is out, productivity applications are out, can the CPU even play a 1080P video without croaking? 4GB of RAM? That thing is gonna be choking on itself! Your better off installing Zorin OS 12 Lite, it would scream on that.
Oh look, it has an itty bitty PCI slot, which matches the RAM, shes a 4.0, which means she can run possibly run a gigabit ethernet card, possibly, if the CPU is strong enough.
To be perfectly honest, this is the point in which I recommend users, just buy a new computer. There is only so much performance, that Linux can give you, on a very old system.
There really is a limit, seriously. When we say Linux breaths new life into old computers, were talking no older then 2012. That machine has late 90's to mid 2000's written all over it.
Put the computer in the closet, play taps in its honor, for it was a good little computer. Buy a new computer, put Zorin OS on it, or go the easier rout, and buy a Star Labs machine with Zorin OS on it.
Thanks Storm for the memory lane photo. I think that thing is a glorified office machine.