Gave neighbour temporary internet access over my router - how to separat our networks

[joora]

Hello,

got a new neighbour, he asked me if I would be so kind to give him temporary internet access over my wireless router, and trying to be a good neighbour I gave him access.

I am pretty much a noob when it comes to networking, so I would be grateful for some help with my problem.

Since I have 2 computers in my network (windows 7, connected in homegroup), WDTV live (which requires that I must share several folders with "everyone" if I want to be able to see them on the device) and a couple of android mobile devices, I would like to separate my computers from his when it comes to local communication.

So I would like to make a setup where his computer(s) has access only to internet, and no access whatsoever with my devices or shared folders.

Is that setup possible and can you give me some pointers?

My wireless router/modem model is Zyxel P-660HW

[Taxmancometh]

There are hotspot software products out there, but the only thing I can think of is a second router.