Put the power of Google Searches right in your own computer and search inside mails, Internet explorer, text files and MS Office files (Word, Excel, PowerPoint). For other file types (including .mp3 and .pdf), Desktop Search usually makes at least the file name searchable. Desktop Search does not search compressed files.
Unfortunately web pages which you viewed with Firefox aren’t added to the Desktop Search index, however, so you won’t be able to find them with Desktop Search but Google is considering “adding increased Firefox support in a future version of Desktop Search”.Same thing with Mozilla Thunderbird.
After this move I am wondering again whatever is happening with Microsoft lately, except for trying to fill the security holes in their (sometimes) up and running operating systems.
Enough talking just go and download your own Google Desktop Search.