Nvidia has a new integrated graphics chipset, but only a few smaller motherboard manufacturers decided to embrace this chipset. It was previously known as MCP68 and the three big ones still don’t have any boards based on it. It made its appearance on Nvidia's driver page.
ATI won the battle, as it is steadily ships the 690G integrated chipset that features HDMI and we are still clueless what is keeping Nvidia's chipset behind. ATI have been shipping the 690G since March and the top three have boards based on it.
We will try to ask around what went wrong, but you can download the reference drivers for the 7050 and 7025 at Nvidia's official site. The 158.22 driver supports Geforce 7050 PV / Nforce 630a and Geforce 7025 / Nforce 630a and it has a WHQL stamp.
You can download it here and hurry up, as it is getting old.