VRDB || how to reactivate || how does VRDB differ from other "restore points"?

Avast Free Antivirus / Premium Security
1

i just had a disaster – and i paid for the software that caused it!! but i digress… – and needed to reinstall ol’ reliable avast! the VRDB icon dutifully appeared but i, in my impetuous (long lost) youth, regrettably “disabled” VRDB.

is it possible to restore it without an ab initio avast reinstall? i can’t see this issue addressed in the help files.

nor do i fully understand its function – again, the help documentation falls far short of comprehensive and intellectually satiating. it appears to maintain 3 copies of “files,” every 3 weeks – but is that only data files, or does VRDB act on application and system files too? if the latter then how does VRDB differ from the many other softwares (such as vista’s native) that are providing “restore points”?

an how much storage does VRDB files occupy?

2

For the ‘i’ icon (VRDB): http://forum.avast.com/index.php?topic=14356.msg121337#msg121337

Through the ‘a’ icon, you can get access to VRDB settings and enable it again.
http://forum.avast.com/index.php?topic=4818.msg34783#msg34783

It stores the necessary info to restore executables (*.exe, *.com) files.

VRDB is not a backup system, the stored information is very small (not the whole files).
Besides, only Win32 executables are processed.
The VRDB data are stored in \Data\Integ\avast.int
So it’s not a bakcup utility, but a restore feature of avast.