How to download Avast to Windows PC using MacBook

Life has expired for MSE running under Windows XP. I am considering installing Avast but there is a problem. I cannot access the Internet from my desktop PC running XP even though it is connected to a LAN that connects to the Internet ??? I would like to download the free version of Avast to a folder on the Windows PC running XP that is accessible from a MacBook that is on the same LAN as the ole desktop running XP and can connect to the Internet. Could someone walk me through how to do it?

Why don’t you just use a USB flash drive?

DJBone

Is that intentional? If so, it seems like your need for an online updating anti-malware solution is greatly reduced if not eliminated.

-Noel