More info:
http://www.virusbtn.com/resources/vgrep/vgrep.cgi?terms=Win32%3ASpyBot-A&product=1

if the SPYBOT/Backdoor was activated (like if found in C:\windows\system32.…)

then you should redo your system from scratch, if you value the security/integrity of your data, passwords, PIN’s etc…