You'd have to crack open the case and look on the HD and RAM to tell. I would guess it's a 5400 RPM HD and PC2100 or PC2700 RAM. Like I said, the only way to really tell for sure it to open the case and look at the stickers on each component.
By cables I meant power cord for CPU, power cord for monitor, video cord for monitor, cord for phone line modem, audio cords for speakers, etc.

This is of course if you are selling previously mentioned items with the computer. They aren't really important, but if someone without them has to buy them, it's about $25-$30 for them. For me it's not an issue cause I have extras of them laying around. I refuse to go to walmart and buy a power cord for my computer for $7. I'm a cheap bastard.