correction: sorry. I entered as administrator user and ran again the spybot and everything was fixed. Nevertheless, I still have problems:
When I start up I get the Error message: "Execution of the specified command has failed". and I have a strange problem with my Symantec AntiVirus. I try to open it (to update) but it keeps disapear after a second or even refuse to open up. I scaned my computer with Panda ActiveScan and the result was:

Incident Status Location
Virus:W32/Randon Disinfected Operating system
Virus:Bck/Sdbot.gen Renamed C:\WINNT\system32\wuaumgrd_exe.vir
Virus:Exploit/iFrame Disinfected C:\Documents and Settings\Smadar\Local Settings\Temporary Internet Files\Content.IE5\GX4XMVST\wbk6D.tmp
Virus:Trj/Downloader.L Disinfected C:\Documents and Settings\Administrator\Local Settings\Temp\Belt.exe
Virus:W32/Netsky.P.worm Disinfected Local Folders\Deleted Items\Re: corrected\product_smaddar.zip[document.txt .exe]
Virus:W32/Netsky.P.worm Disinfected Local Folders\Inbox\Mail Delivery (failure smaddar@netvision.net.il)\message.scr

I have no idea how to deal with it.

The system is Microsoft winsows 2000 5.00.2195

Could you advise me?