Saddam may not have been a radical Muslim, but he was politically savy enough to use Islam as part of his propaganda machine and ramp up the anti-USA rhetoric after the Gulf War. The "success" of 9/11, combined with the efforts of France, Russia and China to lift the UN sanctions, would have certainly emboldened Saddam to further exploit the terrorist network that he already supported. He would have taken credit for "forcing" the UN to back down, and his status would have been immediately elevated in the Sunni Muslim world. The same Sunni Muslim world that spawned al Qaida.
It was apparent, the moment the coalition was poised on the border to remove him, that he would implore his Muslim brothers to fight against the Great Satan. Like Nero, he showed his penchant for the incendiary, just as he did when he torched the Kuwaiti oil fields in retreat.
In short, I have no doubt he would have poured more funding and provided more weapons to the Islamic jihadists. He would have been the Nero of the Sunni Muslim world.