Help, Advice, ideas – i am stuck

Hello.

I am currently building a photocopier supplier/sales website and i need a feature in the site to basically ask some questions and depending on what the user selects another option opens up.

For example –

Photocopier type > Colour or Mono (if colour was selected)

Colour photocopier speed > 21ppm, 30ppm, 40 ppm

and so on.

I basically want a user to work there way along a few questions till i have a good idea on the correct spec they want. This information will then be emailed to a customer support officer who will contact them with prices.

Any ideas on how i can achieve this? In the past i have created a static form that asked the questions but it was quite boring and people just ignored it.

Thanks in advance