Windows 7/2008R2 driver support

If anyone is still having trouble trying to get an older version of the guest agent to install, please check my post here, it may help:
https://forum.proxmox.com/threads/qemu-guest-fails-to-install.86030/post-628055
Thank you! Perhaps at the time when I had this problem (with Proxmox and older versions of Windows) this would have helped, but I solved the problem from the other side: I found and eliminated the reason why I needed to use only the old version of Windows and now everything works on any system.