Throttling bandwidth usage at home

I have a computer on my home network which I wish to throttle.

I believe I will need to replace my current router but I am unsure what feature set I should be looking for when making my purchase.

Infact, are there different ways of throttling traffic ? If so, what information should I consider when making the choice.

I would preferably like this to work 'out of the box', no 'flashing' required.

I use a D-Link DGL-4100 gaming router. Has great QoS/bandwidth filtering.

If you install Tomato firmware (I'd link if I were allowed, but just Google it) on a Linksys router, you'll get QOS and some throttling features. Not sure if that's exactly what you're looking for (if not, what specifically do you need?).