Well, you can get a DVI to HDMI cable easily. But only newish laptops seem to come with DVI/HDMI ports. You can't hook VGA to Scart. Simple put, the information is encoded differently and won't work. Some laptops have a composite video out, thought it's rare. But you can easily plug that directly into a TV.
Anyway, the chances it's not possible. If your laptop has VGA port for an external monitor/projector I suppose you could use a VGA to Composite converter of some kind but they'll be expensive and the results are not that desirable.
Why do you want to hook it up to a TV?