For most people, being able to change the number of home screens on their Android devices requires getting an aftermarket launcher application, such as ADW.Launcher or LauncherPro. However, some people enjoy the stock launchers that come on their phones, and would rather be able to customize it than replace it entirely. For those carrying the Sony Ericsson Xperia Arc, you can now literally crank it up to 11. Pun squarely intended. XDA Senior Member vr5411 has created a thread that has produced mods that will allow anyone with the Xperia Arc to choose how many home screens they want—from 3 to 11.
The modifications are actually modified home.apk files that can be put onto the device and installed like any other apk, so there’s very little risk and it’s very easy to do. The developer has also been kind enough to post an original home.apk for anyone who wants to revert back who forgot to make a backup.
If you’d like to change the number of home screens on your stock launcher, head on over to the original thread, where you can find download links for 3, 5, 7, 9 and 11 home screen configurations, additional information and screen shots._________