Sasser Worm!!

[Hibs4ever]

Hey,
I have the saser worm on my computer. It has been a few times now. I havent had it in a while and when i dit before there was this tool from the microspft website that gets rid of it, which always worked. All the reviews i have read tell me to get this tool aswel. The only problem is that, this tool is no longer available. I think microsoft had made this other tool which is the malicious software removal tool, which is supposed to remove this current virus but it doesn't work. If anyone could point me in a different direction that may help me, it would be greatly apreciated. Thanks!

This is the following message that appears:

C:\WINDOWS\system32\lass.exe" terminated unexpectedly
with status code
1073741819. The system will now shutdown
and restart.

[yahoohelp]

Step 1: - To turn off Windows XP System Restore

Click Start > Programs > Accessories > Windows Explorer
Right-click My Computer, and then click Properties.
Click the System Restore tab.
Check the "Turn off System Restore" or "Turn off System Restore on all drives" check box
Click Apply. The following message appears
As noted in the message, this will delete all existing restore points. Click Yes to do this.
Click OK.

Step 2: - Download and run the following tool to remove worm

http://www1.kfupm.edu.sa/itc/nets/security/rem ovevirus/FxBkmalB.exe

Step 3: - Shutdown computer & restart

Shut down the computer and turn off the power.
Wait for at least 30 seconds and then restart the computer.