Hello I want to connect my computer to my television using a DVI cable.

My Tele has a DVI D connection at the the back and so does my computer.

Do any of you know what cable I would need to do this. Could you point me in the right direction.

Your help is greatly appreciated.

here is all the information you need
http://en.wikipedia.org/wiki/DVI

A DVI to DVI cable, perchance?

eBay is probably your cheapest option:
http://cgi.ebay.co.uk/DVI-D-to-DVI-D...QQcmdZViewItem