I have to buy a new laptop, but I need it to run XP because of some ancient software. My options come with 600M series graphic cards and I can't find anywhere drivers for these on Windows XP. I guess XP won't be able to recognize the gpu. Is there a way to enable this graphic card there? Would Win7 drivers work?
Just run Windows 7, and for the software you still need Windows XP you could use either Windows XP Mode (available from Windows 7 Pro and up) or VirtualBox / VMware.
Windows XP is end of life and should no longer be used.