The basic install sequence (including reformatting the hard drive) is (1) Install windows (2) Install (motherboard) chipset drivers (3) Install device drivers including sound, video, etc. DO NOT skip the chipset drivers, as the chipset drivers define what is on or attached to the motherboard.
You will need Windows XP specific drivers for the hardware. HERE is the Dell downloads for XP
I checked the Autocad site and according to them it does work with Vista.
Here is what they have on their web site:
"Service Pack 2 for AutoCAD 2007 and AutoCAD LT 2007 adds support for Windows Vista 32-bit versions for these releases. To download Service Pack 2, use one of the following links depending on your product:"
I am not a Dell Employee
Dell forum member since 2002
Dell Inspiron 15 - 5577 Laptop
Home Built Desktop PC with ASUS ROG Z170, i7 6700K CPU
Windows 10 64 bit Pro and Windows 10 Insider Program Beta Versions. SSD drives. Cakewalk by BandLab and Studio One 4.6 Pro Recordng Studio Software.