Yes, this tv can be hooked up to PC.
That depends on what sorts of outputs your computer has on it. On an older computer where you only have analog output this TV would take some more complex adapters to hook up.
On most newer computers (last 7 years at least) they come with DVI as an output option. While this TV does not appear to have a DVI in, the cables to convert it are about as cheap as the normal cables (http://www.walmart.com/ip/Link-Depot-DVI-1-HDMI-Link-Depot-1m-Male-Gold-Plated-DVI-D-Dual-Link-to-High-Speed-HDMI-Cable/15074942). If the cable that hooks up to your computer looks like the larger end of that, it should work just fine with this.