I just did a clamav database update and a program upgrade in Debian, and it went well.
Tech: You should be able to do that, I think.
You can do it in Linux via the konsole: dpkg-reconfigure clamav-freshclam, and the settings are stored in /etc/clamav/freshclam.conf.
I can't remember how it's done in windows, though.

If you don't see any configuration options in the gui, maybe under Tools > Preferences > updates or internet, look for a clamwin.conf in Documents and Settings/username/.clamwin/. Also found
this.