Single-speed freewheel installation question

Hi,

I'm in the process of building my first bike and am a bit clueless when it comes to the installation of the freewheel onto the hub.

I have these wheels:
http://www.planet-x-warehouse.co.uk/acatalog/info_WPOONPPWS.html

and plan to get this freewheel:
http://www.velosolo.co.uk/dxfw.html

S, a couple of questions:

1. Is it simply a case of screwing the freewheel onto the threaded hub?
   
2. A specialist tool is most probably required, which one?
   
3. Is a lockring required to secure the freewheel?
   
   

I have done a bit of searching but getting a bit confused so your help would be much appreciated.

Thanks!