Scanning from my computer

Other posting (https://support.avg.com/answers?id=906b0000000D2gwAAC).
AVG Guru

Avinash and Alan
Many thanks for your help.  I got as far as finding the file avgwfpx.sys but then came unstuck as I don't know how to proceed to replace it with your suggestion and do not want to do anything to upset the system.  Could you please indulge me with step by step instructions!
Many thanks
Michele

Other posting (https://support.avg.com/answers?id=906b0000000D2gwAAC).
AVG Guru