Tak sam si odpovim, asi jsem predtim moc nehledal :) Je to dokonce standardni funkce ve windows, viz http://www.pcworld.com/article/152893/turn_your_vi sta_notebook_into_a_wifi_hotspot.html

1. Click Start, Control Panel, Network and Sharing Center .

2. Click Set up a connection or network.

3. Click Set up a wireless ad hoc (computer-to-computer) network, and then click Next.

4. Enter a name for your network, choose a security type (WEP is probably fine, given that you're sharing your network with people you know), and then enter a security key.

5. Check the Save this network box, then click Next.

6. If you see a box marked Turn on Internet Connection Sharing, go ahead and click it.