A while back, I purchased a used Dell Dimension L500c minitower for my kid to use. It has a 500 mhz celeron socket cpu (socket 370?). She has moved on to her own laptop now, so I'm using it for 'by the bed' use. It does fine for poking around the web, and it's nice & compact. My question: does anyone here know which, if any, cpu upgrades will plug & play in this machine? Getting info from Dell seems impossible. Thanks, -Jim