I think I understand how to configure Avast to use my own ISP's proxy, but could someone please confirm that the FAQ which reads
"Q: My ISP wants me to use their HTTP proxy server for accessing the Internet.
In the Internet Explorer options dialog I can see my proxy server address is set as proxy.myisp.net, and the port as 3128 (or any other address/port details).
How can I configure the 'Web Shield' to work in this situation?
A:
On NT-based system (Windows NT, 2000, XP, 2003):
Right click the avast (a) icon in the taskbar.
Choose "On-Access Protection Control"
In the provider list find Web Shield and click Customize.
In the line "Redirected HTTP ports" and the port of your HTTP proxy, e.g.: 80, 3128
Web Shield will now monitor the communication between the browser and the proxy server. If the proxy server is running on you PC (localhost), also clear the "Ignore local communication" checkbox."
Should read
"In the line "Redirected HTTP ports" add the port of your HTTP proxy, e.g.: 80, 3128"