I'll start by stating my lack of exspertise here Roger, but the first thing that came up when I just did a search was a Microsoft article which says, in part: csrss.exe is the main executable for the Microsoft Client/Server Runtime Server I found this at: http://www.liutilities.com/products/wintaskspro/processlibrary/csrss/ I'm not saying that what you have got isn't a trogen, simply that it might not be. I'm sure others will come uup with THE answer. By the way, I've tried Trogen Hunter and it used to play up something awful with my internet access so I uninstalled it. HTH. Ray Personal emails: Email me at mailto:ray-48@xxxxxxxx ----- Original Message ----- From: roger.south To: access-uk@xxxxxxxxxxxxx Sent: Saturday, March 04, 2006 8:35 AM Subject: [access-uk] Removing a Trojan Hi All A few days ago my firewall told me an application named csrrs.exe was asking to access the internet. I have not heard of this before so did a search on Google to find it's a well known trojan worm. I permanently denied access and set about removing it. I can't seem to find a removal tool on the web. I then did searches only to come up with blanks. AVG Pro, Panda, Spybot, AdAware, CClean, Registry Mechanic and Housecall all fail to find it. A search on my XP Home also proves negative. But I had call to go to msconfig to check what was running at start-up and there it is large as life and twice as natural. The location was given as: SOFTWARE\Microsoft\Windows\CurrentVersion\Run I guess this to be a registry location so went to regedit and did a Find. It seems to be everywhere in there. I could remove it manually but the registry makes me very nervous and weak at the knees so I'm looking for any knowledge you guys may have as to if I'm doing the right thing here, please. Many thanks Roger