Is internet tethering possible on Android phone via Bluetooth or Wi-Fi? I have HTC Desire and I use different Wi-Fi networks with it, but I don't have mobile internet access. My laptop is usually connected via a mobile modem.
Is there a way to share the laptop's internet access via Wi-Fi or Bluetooth?
Lorenz Blog has an article which explains how to set up a Wireless Hosted Network specifically on Windows 7.
To do so, the easiest way is to install either Virtual Router or Connectify

(source: londatiga.net)

(source: londatiga.net)
These programs will set up your computer to pass through the Wi-Fi connection
Then on the Android device:

Go to Settings -&gt; Wireless &amp; networks -&gt; Wi-Fi Settings
Open Advance settings menu
Tick the Use static IP option
Enter your desired IP address (ex: 192.168.2.2)  into IP Address field
Enter your IPV4 Address (ex. 192.168.2.1) into Gateway field
Enter 255.255.255.0 into Netmask field
Enter your internet connection’s DNS server (use ipconfig /all command to get DNS info) into DNS 1 and DNS 2. As an alternative, you can use Google Public DNS: 8.8.8.8 and 8.8.4.4
Connect to Wi-Fi using your password
Disable and Enable Wi-Fi (in case if it won’t connect)
Check the connection using browser or other application.