There are two ways to connect an Android phone, and the better choice depends on what you want to do.
To browse your Android photos, music and videos connect your device in mass storage mode.
HTC, Google and Samsung – When the phone is connected to a computer via USB, a USB icon appears in the status bar. Open status menu and you should see "USB connected" notification. Click it and you get a confirmation box where you can select "Mount" or "Don't mount", select "Mount".
Motorola – When the phone is connected to a computer via USB, a USB icon appears in the status bar. Open status menu and you should see "USB connected" notification. Click it and you get a list of different connection modes, select 'Memory Card management' mode. Media browsing won't work in 'Motorola phone tools' or 'No USB connection' modes. If you select 'Windows media', your phone shows your phone media a bit differently and you may not see all of it, so this mode is not recommended.
Other vendors – Connecting an Android phone by some other vendor should go in similar way.
To browse your Android applications you need to enable phone debug mode and install ADB drivers. To enable debug mode in your Android, go: Settings -> Applications -> Development -> and check 'USB debugging'.
HTC – After installing 'HTC sync' connect your phone with a USB cable and you will see a USB icon in the status bar. Open status menu and you should see a "HTC sync" notification; click it and you can start browsing your applications in Dazzboard.
Motorola – After installing drivers from Motorola Media Link CD, you should be able to browse your applications in Aazzboard in any connection mode, remember to enable debugging. (Note: to get best usage experience enable debug and use your device in Memory Card management mode, then you can browse your applications and media without changing modes.)