curiou for an answer

[miceuud]

 i ve got a problem here,my system is infected with a worm that converts *.doc to *.scr tried using home edition of avast but to no aval what edition can i use or do i need any 3rd pary utilty software?

also i have a system infeted with worm it displays KATAMUTIARA at the strtup boot screen and after logging on its boots up c:\windows on its own and dissables run,affect *.exe file

appreciate if you reply me soonest

[Lisandro]

It will be good if you download, install, update and run AVG Antispyware. Some users recommend SUPERantispyware, Spyware Terminator and/or a-squared (take care about false positives).
If any infection is detected, better and safer is send the file to Quarantine than to simple delete than.

If you still detecting any strange behavior or even you're sure you're not clean, maybe it will be good to test your machine with anti-rootkit applications. I suggest AVG, Panda and/or F-Secure BlackLight.

Also, if you still detecting strange behaviors or you want to be sure you're clean, maybe making a HijackThis log to post here and, specially, scan and submit to on-line analysis the RunScanner log would help to identify the problem and the solution.