How to handle registration/checkout urls

Hi there,

I'd like to give the registration / checkout page a significant title.

How is this possible with an url like this:
www.mathelike2016.mathelike.de/component...-up.html?Itemid=2880

sh404sef is installed and with the components settings os membership is set to use Joomla! Router. Is this correct?

Thanks!
Christian