Here's something I found helpful - I'm very selective about what I allow in my explorer shell integration.
BUT since I almost never use the "Send To" menu, it's useful for some less used tasks.
Here's another way to get a "clamScan" task in the context menu:
Create a 'clamscan.bat' file in clamwin/bin. Put this inside:
clamscan.exe --database="C:\Documents and Settings\All Users\.clamwin\db" --recursive -i %*
pause |
Copy the file and "paste as shortcut" into C:\documents and settings\[user]\SendTo
Also here's a quick "freshclam.bat":
freshclam --datadir="C:\Documents and Settings\All Users\.clamwin\db" --config-file="C:\Program Files\ClamWin\bin\freshclam.conf"
pause |