This kinda has to do with registry tweaks..... But i do the tweak to change the logon screen to a Windows Professional screen but then when i reboot and message pop ups saying msgina.dll cant not be open correctly..... and i cant go into the windows screen.... i put in the Windows XP CD and did the Recovery Console and that didnt work i actually have to reformatt my computer to get it normal again?

have u replaced logonui.exe in system32?
if yes check its(file u replaced) version.imean if u have sp2 in ur system ur logonui file must be sp2 file.
copy ur current logonui file from ur system folder to another location.and use reshack to edit it.and replace it with the original one.it will work

k thanks illl give it a try!