desktop computer signal boost

If anyone is looking for a near new Gateway SX2110GUW23 .. I have a client who would like to sell it. He bought a laptop and prefers using that now :>

Here's about what it's like .. http://www.amazon.com/Gateway-SX2110G-UW23-Desktop-PC/dp/B00E6RYVOO ..I'd hazard a guess he'd let it go with the monitor/keyboard/mouse too all for $200 or so ..