ThreatExpert's Statistics for Adware.OneStep.A [PC Tools]:

Adware.OneStep.A [PC Tools] is also known as:

Threat Alias	Number of Incidents
not-a-virus:AdWare.Win32.OneStep.d [Kaspersky Lab]	1

Adware.OneStep.A [PC Tools] is known to be created as:

%ProgramFiles%\onestepsearch\onestep.dll

Note: %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.