I can't say I'm a great expert on this, but  something I've found over 
time is, if using a MS OS, then some virii like to hide in the system 
restore area if enabled, and can respawn themselves from there and 
operate quite happily from this location.

The only way I've found to really delete them is to start up in safe 
mode run any anti everything tools, delete the system restore 
archive(s) (I always have sys restore disabled on my own systems) hunt 
down any strange files that seem to hook into Windows Services and 
delete and remove anything in registry and then reboot. I also 
occasionally uninstall the firewall and virus checker utility and then 
re-install a clean copy (disconnected from the WAN/LAN naturally).

Is it possible for some one to have rewritten the firmware in your 
router and 'updated' it remotely? I know my router allows for external 
upgrading to be enabled.

Colin
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cdb, colin@btech-online.co.uk on 21/02/2009
 
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