Not from Dell, and not from Intel either. Your computer has the Intel 845G chipset on it and Intel has ceased all support (declared EOL) for it in regards to Vista (reason why there are no drivers for it from Dell as well). Here is the OS selection page for the 845 series of chipset, Download Software, Drivers and Utilities Filters
with the last chipset update dated almost 3 years ago (with a couple of updates almost 6 years old). Basically comes down to, you want to run Vista properly (and even less chance if you want to run Windows 7 on it) you're going to need to get a computer that is much newer than what you have.