Since you have no virus scanners due to a lack of those files and they come in ZIP archives you will to just have to trust another avast users judgement. You need to past those files once extracted in your system32 folder in the main windows directory.
Jedidor, are you having problems with any of these files? I mean, all files necessary for avast to function (including some of the files you quoted) are included in the avast setup package and should be installed automatically.
Try a repair of Avast. start > control panel > programs > add/remove > Avast > change/repair. If that solved the problem, I suggest you upgrade to 4.5 beta
Same problem here on a freshly formatted XP Home, no SPs yet or anything. Reinstalling didn’t work but downloading those files above did - just a note though - the last link on the list should be
Excuse me? Why should I have to install Visual Studio? This is a plain old WinXP system, and I’m trying to keep intalls to a minimum. Is Avast not capable of packaging their software right?
There are no MVVC* files in C:\Program Files\Alwil Software\Avast4, as that indicates there should be. So the Avast installer apparently did not install those files.