Hi, After looking up a few things on my cpu, i came to the question : what's that file : HOSTS.bak. Is it some king of log of all restricted sites ? Can it be renamed with .txt at the end without altering it ? Thanks. gus.

That file has little or nothing to do with CPU. Most decent editors make a backup of the file being edited, and give it an extension of BAK. If that's what's going on, you can safely rename it. If at first you don't succeed, you're about average. M2

By ancient convention, yes, BAK signifies a backup file - in other words, a kind of duplicate. "Can it be renamed with .txt at the end without altering it ?" Well, gosh - yes, just like other files - renaming doesn't alter the contents. No need to specify it as a TXT file though - what most folks do is put a link to notepad in their 'sendto' folder (C:\Windows\SendTo), then, r-click the file in question and "send to" notepad If you get people asking the wrong questions, you don't have to worry about the answers

A hosts file (no extension) has several uses. As often as not it is used to prevent access to specific websites where there is some sort of security risk. Some folk write their own, others are produced by programs like SpyBot, also there are people like me who use SpyBot but add to it. If you look inside it with NotePad, anything against 127.0.0.1 are websites which have been barred. Hosts.bak is just a backing file and is unlikely to exists unles some program has updated "hosts" itself. It would be no big deal to delete hosts.bak if you wish to. Well, unless the program that updated hosts was a nasty itself. Plenty more info about hosts proper via Google. DerekW