just get the latest update from the mictosoft update site...
you are wouneabel if you are using win2k or NT 4.0, with IIS (Internet Information Server 4.0 or 5.0)
The Code red makes a backdoor in the "explorer.exe"
wicth makes hackers abel to get any info. out of your system.
you can pervent infection, by updating, your software from www.microsoft.com