Not existing Shift-JIS codec in QTextCodec

[Sölve]

Hello.
During program writing I met problem with QTextCodec.
I want to decode text from Shift-JIS.

I've got two computers, at first I've got linux and Win 7 x64, at second Win XP.
On linux and Win 7 with installed Qt4 (4.7.0) decoding is successful, but on Win XP (Qt4 is not installed) not.
When I creating QTextCodec 0 is returned and I can't decode text.
On XP I've got installed east-asian languages support.
How can I get QTextCodec working?
Thanks in advance.

Some piece of my code:

QTextCodec *codec = QTextCodec::codecForName("Shift-JIS");
if(codec == 0)
{
	qDebug() << tr("There're no Shift-JIS codec");
	return;
}
QByteArray tTemp;
// There're writing to tTemp in loop
 
QString temp = codec->toUnicode(tTemp);

QTextCodec *codec = QTextCodec::codecForName("Shift-JIS");
if(codec == 0)
{
	qDebug() << tr("There're no Shift-JIS codec");
	return;
}
QByteArray tTemp;
// There're writing to tTemp in loop

QString temp = codec->toUnicode(tTemp);

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