tos,
The main requirement of AVAST is that Foxmail must use SMTP and POP3 protocols. If it does, then all you would need to do is run the EMail Wizard from the Start Programs Folder.
You CAN manually configure AVAST if you wish. I don't have my manual handy, but if you have installed Avast 4 on your system, then go into the help file and look up "manual configuration of email settings".
It walks your right through the process in a few steps including changing the .ini file.
If you have trouble, then IM me and I will go through it with you.
techie