For a Netbook, a USB to DVI adapter may be a better option, especially if you basically intend using the screen as a monitor for e-mail, Internet access and so on. These are similar price (~â‚¬60) to a basic level VGA to HDMI adapter. I have used a Toshiba USB to VGA/DVI adapter before and despite my expectation running off a USB port, it was perfectly usable, although I'd imagine that it would struggle with full-screen video. If your TV does not have DVI, you can pick up a DVI to HDMI adapter (or cable) quite easily.
This StarTech model supports up to 1650 x 1050, which is more than what most VGA to HDMI adapters are capable of. As a USB to DVI remains digital all the way, even with a DVI-HDMI adapter, it'll also give a sharper picture than through the VGA port.
As most Netbooks can only play standard definition video (some up to 720p), for video, you would be better off getting a DVD player with a USB port or a HD media player if you would like to play HD or Full HD video. But for Internet access from a sofa, the USB adapter is probably the best way to go, along with a wireless keyboard & mouse.