Wireless adaptor for desktop pc

[riptide]

Am about to get a new desktop,nothing too fancy as I only use my computer for surfing the web, playing cards, with the occasional letter and a few photos. As previously mentioned, I need the desktop to be wireless so will have to add some sort of connection for this to happen. Have a BT Home Hub with "n" connectivity and I see on the BT site that they offer a Belkin N Wireless USB Adaptor which they say works perfectly with their home hub. Presume this would be okay, I know some people advise to get a wireless card, but I really do not have a clue about the workings of computers and would not want to mess around trying to install this. Is it a simple thing to do and would it be better.

Was thinking of getting a basic model Hp desktop with AMD Athlon processor, are these okay rather than intel.

Thanks for your help

Riptide