BACKDOOR-AMQ NO AVAST DETECTION

:)Backdoor-AMQ windows XP
Symptom: avast did not auto load into system tray (icon will show up and will disappear). When using Norton you cannot activate autopotect. Both programs did not detect the virus. MacAfee did. Has 3 files c:\windows\msagent\msbpto.com, c:\windows\msgord.com and a file that recreat it self even when deleted in C:\windows\svchost.exe all files have a size of 54K.

Please FIX