This link has a 2 page PDF datasheet document that tells you all the specification details...
http://kbserver.netgear.com/datasheets/wnr2000_ds_21apr08.pdf
To connect to the Internet you will need...
A contract with an ISP
A telephone line
A Wireless Router (wnr2000 for instance)
A filter to join your telephone line to the house 'phone and the router
A cable between the router and the filter
An external power supply for the router
A wireless device in the laptop
The device driver for the wireless card
Given the relatively low cost of Wireless Routers - in the UK, BT give you a free one if you take out a Broadband contract with them - you may be best off giving your wnr2000 to somebody else.
Good luck...
Peccavi, August 2010