just set the "Connect automatically" to "Always ask"..

then, install ConnectNow from the appmanager, and u can create a shortcut to the specific connection u want to have quick access to...

once installed, tap anywhere on the screen to bring up the tool (wrench icon), then select "add widget"..connectnow will be on the list..just tap it, and set your preferred, frequently used connection..

once done, it's easy..just tap at the connectnow shortcut with the pre-defined connection by u..and u will be connected to the internet without having to tap the status area, clicking the internet connection, then clicking on the available wifi...