Rip...I found this
Delete the Winstart.bat file
Most variants of Backdoor.Optix will create a batch file named Winstart.bat in the %Windows% folder. Winstart.bat is a standard Windows file that can be created and used by programs when you install software. If the Winstart.bat file exists, it will run when you start Windows, and any commands in it will be executed. by default this is C:\Windows or C:\Winnt) and copies itself to that location.
Backdoor.Optix keeps a second copy of itself on the hard drive. if you delete the Trojan from its original location, when Winstart.bat is run, it will recreate the Trojan file.
Therefore, if Backdoor.Optix is found on the computer, use Windows Explorer to locate and delete the \Windows\Winstart.bat file before you restart the computer.
To do this:
1. Start Windows Explorer.
2. Browse to the folder where Windows is installed. By default this is C:\Windows or C:\Winnt.
3. Locate and delete the Winstart.bat file.
also check this out:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
Troj/Optix will also copy the Trojan to the Startup group in the Start Menu.
here's how it works:
When first run, the Trojan creates the sub-directory \OleFiles\, moves itself there and creates the following registry entry :
HKLM\Software\Microsoft\Windows\
CurrentVersion\explorer\User Shell Folders\ Common Startup = \OleFiles\.
This ensures that the server process is run automatically each time the machine is restarted.
so delete the value in that key: eg;\OLEFILES\delete the trojan value
hope this helps, all the best