winPE, as we all know, is more and more sophisiticated for it can replace most of the functions of XP, surfing, working, music, movie, etc, the Next Best Thing. Even the best thing also has bug, this virtual environment cannot save datas while working, you can copy and past manually if you want to save a document, but you will not have any good solution to save your app data, this means you need to install an app again next time if you quit winPE, this may be a problem to many people, then how to save all our app datas at winPE?? Firstly, install PE in your usb flash drive<attention, your usb flash drive wil be formatted during this time>, if you don't know how to install PE in a USB drive or you don't know where to get a usb drive version PE, pls check this post http://windowsconnected.com/blogs/joshs_bl...-0-usb-key.aspx second, install virtual desktop in your usb drive. As far as I know, several softwares can realize virtual desktop in usb drive, such as sandisk U3, ceedo, ******* V3, as I've tested, only ******* V3 will work very well with PE, it can save all app datas automaticlly such as chatting history, password, app settings, so you needn't to worry about lose any good info in PE. If you don't know where to download a ******* V3, pls go to http://www.download.com/prayayav3/3000-2084_4-10824503.html. Also you can install ******* V3 after you've started PE via a usb drive, it will be much slowly but not easy to be error.. At last, you can install the apps you like via ******* V3 in your usb drive at PE, you'll feel much more better to PE.. You can have a try if you're interested in PE, welcome to have a discuss if you have any questions.. and don't forget to set your usb drive as the first starting dirve of your computer, Only in this way PE will start up in your usb drive..