Tip: come ripristinare l'associazione di default ai file .zip
Un paio di volte ci ho pensato, ora me lo segno così mi resta.
*...CUT... How do you restore the default.zip file association in Windowx XP or Vista? It wasn't as simple as right clicking and selecting "Open with.." which is what I tried for about 5 minutes. turns out you can restore it this way though:
cmd /c assoc.zip=CompressedFolder *
Fonte: How to restore the native Zip file integration in Windows