[Upgrading, Modifying and Unlocking] BenThon:
Even if I use such file found in the Xperia ROM :

[SIZE=1][Version][/SIZE]
[SIZE=1]Signature = "$Chicago$"[/SIZE]
[SIZE=1]CESignature = "$Windows CE$"[/SIZE]
[SIZE=1]Provider = "SEUS"[/SIZE]
[SIZE=1][CEStrings][/SIZE]
[SIZE=1]Appname = "TSKAllowedReg"[/SIZE]
[SIZE=1]InstallDir = "%CE1%\%AppName%" ; (%CE1%\TSKAllowedReg)[/SIZE]
[SIZE=1][CEDevice][/SIZE]
[SIZE=1]VersionMin = 4.0[/SIZE]
[SIZE=1]VersionMax = 6.99[/SIZE]
[SIZE=1]BuildMax = -536870912; Support des écrans carrés et de la rotation d' écran[/SIZE]
[SIZE=1][SourceDisksNames][/SIZE]
[SIZE=1]2 = ,"Dir2",,.Temp[/SIZE]
[SIZE=1][SourceDisksFiles][/SIZE]
[SIZE=1]dummy = 2 ; 001[/SIZE]
[SIZE=1][DefaultInstall][/SIZE]
[SIZE=1]AddReg = ClesRegistre[/SIZE]
[SIZE=1]CopyFiles = CopierVersDir00[/SIZE]
[SIZE=1][CopierVersDir00] ; (Temp : Temp)[/SIZE]
[SIZE=1]dummy[/SIZE]
[SIZE=1][DestinationDirs][/SIZE]
[SIZE=1]CopierVersDir00 = 0, Temp[/SIZE]
[SIZE=1][Strings][/SIZE]
[SIZE=1]reg_path00 = Security\AppInstall\TSKAllowed[/SIZE]
[SIZE=1][ClesRegistre][/SIZE]
[SIZE=1]HKLM,%reg_path00%,2,0x00010000,stwater.png,stwater_240_240.png,stwater_240_320.png,stwater_320_240.png,stwater_800_480.png,stwater_640_480.png,stwater_480_480.png,stwater_480_640.png,stwater_480_800.png,stwater_192_192.png,stwater_96_96.png,stwater_131_131.png,tdywater.png,tdywater_240_240.png,tdywater_240_320.png,tdywater_320_240.png,tdywater_800_480.png,tdywater_640_480.png,tdywater_480_480.png,tdywater_480_640.png,tdywater_480_800.png,tdywater_192_192.png,tdywater_96_96.png,tdywater_131_131.png[/SIZE]
[SIZE=1]HKLM,%reg_path00%,1,0x00010000,stwater.gif,stwater_240_240.gif,stwater_240_320.gif,stwater_320_240.gif,stwater_800_480.gif,stwater_640_480.gif,stwater_480_480.gif,stwater_480_640.gif,stwater_480_800.gif,stwater_192_192.gif,stwater_96_96.gif,stwater_131_131.gif,tdywater.gif,tdywater_240_240.gif,tdywater_240_320.gif,tdywater_320_240.gif,tdywater_800_480.gif,tdywater_640_480.gif,tdywater_480_480.gif,tdywater_480_640.gif,tdywater_480_800.gif,tdywater_192_192.gif,tdywater_96_96.gif,tdywater_131_131.gif[/SIZE]
[SIZE=1]HKLM,%reg_path00%,4,0x00010000,stwater.bmp,stwater_240_240.bmp,stwater_240_320.bmp,stwater_320_240.bmp,stwater_800_480.bmp,stwater_640_480.bmp,stwater_480_480.bmp,stwater_480_640.bmp,stwater_480_800.bmp,stwater_192_192.bmp,stwater_96_96.bmp,stwater_131_131.bmp,tdywater.bmp,tdywater_240_240.bmp,tdywater_240_320.bmp,tdywater_320_240.bmp,tdywater_800_480.bmp,tdywater_640_480.bmp,tdywater_480_480.bmp,tdywater_480_640.bmp,tdywater_480_800.bmp,tdywater_192_192.bmp,tdywater_96_96.bmp,tdywater_131_131.bmp[/SIZE]
[SIZE=1]HKLM,%reg_path00%,3,0x00010000,stwater.jpg,stwater_240_240.jpg,stwater_240_320.jpg,stwater_320_240.jpg,stwater_800_480.jpg,stwater_640_480.jpg,stwater_480_480.jpg,stwater_480_640.jpg,stwater_480_800.jpg,stwater_192_192.jpg,stwater_96_96.jpg,stwater_131_131.jpg,tdywater.jpg,tdywater_240_240.jpg,tdywater_240_320.jpg,tdywater_320_240.jpg,tdywater_800_480.jpg,tdywater_640_480.jpg,tdywater_480_480.jpg,tdywater_480_640.jpg,tdywater_480_800.jpg,tdywater_192_192.jpg,tdywater_96_96.jpg,tdywater_131_131.jpg[/SIZE]

These WVGA and WQVGA themes do not work in Microsoft Emulator !

Is there anybody with an idea ? Thanks.