Sadly you can't use it if you use Nod32, to my mind the best of the antivirus programs. The Google help site says:
Unfortunately, there are also a few programs which are entirely incompatible with Desktop Search. These include:

- NOD32 AntiVirus
- mclsp.dll (McAfee Privacy Service)
- Vetredir.dll (VET Antivirus)
- aslsp.dll (from Aventail)
- stplayer.dll
- Mwtsp.dll (MicroWorld Escan/Mailscan)
- farlsp.dll or fbm.dll (Hacker Smacker Firewall)
- cwhook.dll (ContentWatch Internet Filter)
- Netdog.dll (V Armor2net personal firewall)
- Armor2net
- Ndpwsspr.dll
- Connwsp.dll (Port Magic)
- Idmmbc.dll (Internet Download Manager)
- Inetcntrl.dll (Bsafe Online Internet Content Filter)
- Ictload.dll (Accelenet Internet Accelerator)
- Pxlsp.dll (ProxyConn)
- SmartPass

If you're currently using any of these programs, you won't be able to also use Google Desktop Search. If you'd like to use Desktop Search, you'll need to entirely uninstall the other application. We realize this is an inconvenience and are working hard to resolve this problem.

Doug Weller

Director The Hall of Ma'at
Doug's Skeptical Archaeology site::
[www.ramtops.co.uk]