"Test archive" shows up in "Avast! for The Bat!"
OK, "archives" means "compressed files" - such as ZIP, RAR, ARJ, etc. So, if this option is enabled, not only the main file will be scanned - but if it is recognized as an archive, the files inside will be unpacked and scanned as well.
Actually, I don't understand what this dialog is about.
It's a configuration dialog for The Bat! plugin - here the user can set some basic options.
Also, what does the dialog "Define filter for current list" mean?
Can you explain a little about what things is inside that box?
This is used in the Log Viewer. Sometimes, a very big number of items (lines) are displayed - so it may be hard to find something useful in the list. So, you can define a "filter" - display only some of the items (according to given condition) and hide the rest of them. For example, if you have a big list, spreading over many pages, and you are looking for information on Beagle virus, you set a filter as
*Beagle*. Now, only the lines containing the word Beagle will be displayed; the rest will be hidden.
The exact behavior depends on the 2 radio buttons below; you can choose either to really hide the items not matching the filter, or rather to
select the items that do match (and keep the rest, just not selected).
Also, you can define a time range - what items should be included in the filter.
You can start avast! Log Viewer and try the filter yourself (provided you have any logged items there).