A similar problem - a week or so ago my anti-virus software quarantined a 'Trojan' (can't remember what it was named) - and I followed the procedures it suggested. Since then every time I open up the computer I get a pop-up 'Error message' which says 'Couldn't open the file WINDOWS/Ubamaxagwoy.DLL, module not found'. I can close the box each time with the top right hand corner cross, but nothing happens if I click the 'OK' button, or another large red 'button' on the message. I suspect that this is something to do with the 'quarantined' trojan. I've run Spybot and it still doesn't stop the message appearing. I've also cleared any obscure files from my Windows folder. Should I be worried, and how can I stop this message appearing each time? Thanks for any suggestions.