Recently, I FIXED a spyware named ""Pipas_A" by using Spybot; but then, this spyware returns again and again.  The Spybot cannot fix it permanently.
     Has anyone the same problem?  If so, has he/she been successfully destroyed this stubbon spyware?  If so, I would LIKE to know how.some other tools such as  ASquared or Ewido should clear up any problems

ASquared
a trial from here

http://www.emsisoft.es/es/software/download/

Ewido
download a thirty day trial for free from

http://www.ewido.net/en/

copy these links into your browser then download and update each product before runningScan in safe mode.Perhaps Spybot is removing it but you are getting reinfected again & again
What realtime protection are you using?
Is your OS up to date?
What browser are you using?We don't know yet what OS you are running however if it's WinXP i would suggest shutting off system restore befor e you scan along with the solid advice you have already recieved...Thank you guys!
My OS is Win98se.
I will try out the possible solutions and get back to you with result later on.Asquare is no good for Win98se; so Ewido seems to be the winner.  So far my problem is gone.  I will post again if it is otherwise.Ewido won't run on 98, you will need to use A-squared.Hi, Prodigy, you are absolutely right, it was my mistake!  It should have been the other way round:  Ewido is not for my PC, but the ASquared.It does not take long that the "Pipas_A" returns again.  NOTHING successfully defeats it, including the A-Squared!

So, I am STILL waiting for some smart advise, in the mean time, I guess I will have to live with it!You scanned in safe mode?

Use Adaware SE. Quote

Perhaps Spybot is removing it but you are getting reinfected again & again  
What realtime protection are you using?
Is your OS up to date?
What browser are you using?