public static extern int CeRegSetValueEx(

function info on msdn at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceactsy/html/cerefCeRegSetValueExRAPI.asp

    CeRegSetValueEx(key,"thisVal",0, 1, lpData, lpData.Length + 1);

        CeRegSetValueEx(key, thisval, 0, 1, lpData, lpData.Length + 1) '??